1065597380 has 48 divisors (see below), whose sum is σ = 2316139056. Its totient is φ = 411525120.

The previous prime is 1065597367. The next prime is 1065597427. The reversal of 1065597380 is 837955601.

It can be written as a sum of positive squares in 8 ways, for example, as 420742144 + 644855236 = 20512^2 + 25394^2 .

It is a super-2 number, since 2×1065597380² = 2270995552525728800, which contains 22 as substring.

It is an unprimeable number.

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, 72842 + ... + 86238.

It is an arithmetic number, because the mean of its divisors is an integer number (48252897).

Almost surely, 2^1065597380 is an apocalyptic number.

1065597380 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 1065597380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1158069528).

1065597380 is an abundant number, since it is smaller than the sum of its proper divisors (1250541676).

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

1065597380 is a wasteful number, since it uses less digits than its factorization.

1065597380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13544 (or 13542 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 44.

The square root of 1065597380 is about 32643.4890904756. The cubic root of 1065597380 is about 1021.4043771844.

The spelling of 1065597380 in words is "one billion, sixty-five million, five hundred ninety-seven thousand, three hundred eighty".