1072638515 has 32 divisors (see below), whose sum is σ = 1469059200. Its totient is φ = 746081280.

The previous prime is 1072638491. The next prime is 1072638517. The reversal of 1072638515 is 5158362701.

It is not a de Polignac number, because 1072638515 - 2⁶ = 1072638451 is a prime.

It is a super-2 number, since 2×1072638515² = 2301106767722810450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1072638517) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 70346 + ... + 84224.

It is an arithmetic number, because the mean of its divisors is an integer number (45908100).

Almost surely, 2^1072638515 is an apocalyptic number.

1072638515 is a deficient number, since it is larger than the sum of its proper divisors (396420685).

1072638515 is a wasteful number, since it uses less digits than its factorization.

1072638515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13967.

The product of its (nonzero) digits is 50400, while the sum is 38.

The square root of 1072638515 is about 32751.1605137894. The cubic root of 1072638515 is about 1023.6491473158.

The spelling of 1072638515 in words is "one billion, seventy-two million, six hundred thirty-eight thousand, five hundred fifteen".