1064440992 has 96 divisors (see below), whose sum is σ = 2971987200. Its totient is φ = 332423168.

The previous prime is 1064440991. The next prime is 1064440999. The reversal of 1064440992 is 2990444601.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×1064440992² = 2266069250899888128, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1064440992.

It is not an unprimeable number, because it can be changed into a prime (1064440991) 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, 388684 + ... + 391412.

It is an arithmetic number, because the mean of its divisors is an integer number (30958200).

Almost surely, 2^1064440992 is an apocalyptic number.

1064440992 is a gapful number since it is divisible by the number (12) 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 1064440992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1485993600).

1064440992 is an abundant number, since it is smaller than the sum of its proper divisors (1907546208).

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

1064440992 is a wasteful number, since it uses less digits than its factorization.

1064440992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2998 (or 2990 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 1064440992 is about 32625.7718989145. The cubic root of 1064440992 is about 1021.0347668909.

The spelling of 1064440992 in words is "one billion, sixty-four million, four hundred forty thousand, nine hundred ninety-two".