1065383920 has 80 divisors (see below), whose sum is σ = 2654740800. Its totient is φ = 396582912.

The previous prime is 1065383911. The next prime is 1065383923. The reversal of 1065383920 is 293835601.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×1065383920² = 2270085793989132800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a self number, because there is not a number n which added to its sum of digits gives 1065383920.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1065383923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60256 + ... + 75904.

It is an arithmetic number, because the mean of its divisors is an integer number (33184260).

Almost surely, 2^1065383920 is an apocalyptic number.

1065383920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1065383920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1327370400).

1065383920 is an abundant number, since it is smaller than the sum of its proper divisors (1589356880).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1065383920 is a wasteful number, since it uses less digits than its factorization.

1065383920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15722 (or 15716 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 1065383920 is about 32640.2193620080. The cubic root of 1065383920 is about 1021.3361702041.

The spelling of 1065383920 in words is "one billion, sixty-five million, three hundred eighty-three thousand, nine hundred twenty".