1012138495 has 16 divisors (see below), whose sum is σ = 1224720000. Its totient is φ = 802967968.

The previous prime is 1012138489. The next prime is 1012138507. The reversal of 1012138495 is 5948312101.

It is a cyclic number.

It is not a de Polignac number, because 1012138495 - 2³ = 1012138487 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1012138495.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 373656 + ... + 376354.

It is an arithmetic number, because the mean of its divisors is an integer number (76545000).

Almost surely, 2^1012138495 is an apocalyptic number.

1012138495 is a deficient number, since it is larger than the sum of its proper divisors (212581505).

1012138495 is a wasteful number, since it uses less digits than its factorization.

1012138495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3302.

The product of its (nonzero) digits is 8640, while the sum is 34.

The square root of 1012138495 is about 31814.1241432166. The cubic root of 1012138495 is about 1004.0299030659.

The spelling of 1012138495 in words is "one billion, twelve million, one hundred thirty-eight thousand, four hundred ninety-five".