1072115864 has 16 divisors (see below), whose sum is σ = 2010602520. Its totient is φ = 535955200.

The previous prime is 1072115857. The next prime is 1072115867. The reversal of 1072115864 is 4685112701.

It is a super-2 number, since 2×1072115864² = 2298864851680932992, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1072115867) 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 3 ways as a sum of consecutive naturals, for example, 49064 + ... + 67464.

Almost surely, 2^1072115864 is an apocalyptic number.

It is an amenable number.

1072115864 is a deficient number, since it is larger than the sum of its proper divisors (938486656).

1072115864 is a wasteful number, since it uses less digits than its factorization.

1072115864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25690 (or 25686 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 35.

The square root of 1072115864 is about 32743.1804197454. The cubic root of 1072115864 is about 1023.4828601144.

The spelling of 1072115864 in words is "one billion, seventy-two million, one hundred fifteen thousand, eight hundred sixty-four".