1157811930812 has 12 divisors (see below), whose sum is σ = 2026207152816. Its totient is φ = 578895601440.

The previous prime is 1157811930811. The next prime is 1157811930823. The reversal of 1157811930812 is 2180391187511.

It is a happy number.

It is a super-2 number, since 2×1157811930812² (a number of 25 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1157811930811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2336864 + ... + 2788647.

It is an arithmetic number, because the mean of its divisors is an integer number (168850596068).

Almost surely, 2^{1157811930812} is an apocalyptic number.

It is an amenable number.

1157811930812 is a deficient number, since it is larger than the sum of its proper divisors (868395222004).

1157811930812 is a wasteful number, since it uses less digits than its factorization.

1157811930812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5181988 (or 5181986 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 47.

The spelling of 1157811930812 in words is "one trillion, one hundred fifty-seven billion, eight hundred eleven million, nine hundred thirty thousand, eight hundred twelve".