1125978931 has 96 divisors (see below), whose sum is σ = 1604341760. Its totient is φ = 769824000.

The previous prime is 1125978907. The next prime is 1125978967. The reversal of 1125978931 is 1398795211.

It is not a de Polignac number, because 1125978931 - 2¹¹ = 1125976883 is a prime.

It is a super-2 number, since 2×1125978931² = 2535657106111805522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1125978991) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 18458641 + ... + 18458701.

Almost surely, 2^1125978931 is an apocalyptic number.

1125978931 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1125978931 is a deficient number, since it is larger than the sum of its proper divisors (478362829).

1125978931 is a wasteful number, since it uses less digits than its factorization.

1125978931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177 (or 166 counting only the distinct ones).

The product of its digits is 136080, while the sum is 46.

The square root of 1125978931 is about 33555.6095310456. The cubic root of 1125978931 is about 1040.3434919998.

The spelling of 1125978931 in words is "one billion, one hundred twenty-five million, nine hundred seventy-eight thousand, nine hundred thirty-one".