1064639888 has 40 divisors (see below), whose sum is σ = 2252730816. Its totient is φ = 484444800.

The previous prime is 1064639869. The next prime is 1064639897. The reversal of 1064639888 is 8889364601.

It is a super-2 number, since 2×1064639888² = 2266916182241305088, 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 7 ways as a sum of consecutive naturals, for example, 21278 + ... + 50813.

Almost surely, 2^1064639888 is an apocalyptic number.

It is an amenable number.

1064639888 is an abundant number, since it is smaller than the sum of its proper divisors (1188090928).

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

1064639888 is a wasteful number, since it uses less digits than its factorization.

1064639888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72183 (or 72177 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 53.

The square root of 1064639888 is about 32628.8198989789. The cubic root of 1064639888 is about 1021.0983580419.

The spelling of 1064639888 in words is "one billion, sixty-four million, six hundred thirty-nine thousand, eight hundred eighty-eight".