1012564156 has 12 divisors (see below), whose sum is σ = 1782231192. Its totient is φ = 503355248.

The previous prime is 1012564127. The next prime is 1012564171. The reversal of 1012564156 is 6514652101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 730930 + ... + 732313.

It is an arithmetic number, because the mean of its divisors is an integer number (148519266).

Almost surely, 2^1012564156 is an apocalyptic number.

It is an amenable number.

1012564156 is a deficient number, since it is larger than the sum of its proper divisors (769667036).

1012564156 is a wasteful number, since it uses less digits than its factorization.

1012564156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1463420 (or 1463418 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 31.

The square root of 1012564156 is about 31820.8132517068. The cubic root of 1012564156 is about 1004.1706336335.

The spelling of 1012564156 in words is "one billion, twelve million, five hundred sixty-four thousand, one hundred fifty-six".