1065870144 has 112 divisors (see below), whose sum is σ = 3166262400. Its totient is φ = 351571968.

The previous prime is 1065870083. The next prime is 1065870149. The reversal of 1065870144 is 4410785601.

It is a happy number.

It is a super-2 number, since 2×1065870144² = 2272158327741161472, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1065870099 and 1065870108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1065870149) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 164437 + ... + 170795.

It is an arithmetic number, because the mean of its divisors is an integer number (28270200).

Almost surely, 2^1065870144 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1065870144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1583131200).

1065870144 is an abundant number, since it is smaller than the sum of its proper divisors (2100392256).

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

1065870144 is an equidigital number, since it uses as much as digits as its factorization.

1065870144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6477 (or 6461 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 1065870144 is about 32647.6667466452. Note that the first 3 decimals coincide. The cubic root of 1065870144 is about 1021.4915203464.

The spelling of 1065870144 in words is "one billion, sixty-five million, eight hundred seventy thousand, one hundred forty-four".