1145916931 has 2 divisors, whose sum is σ = 1145916932. Its totient is φ = 1145916930.

The previous prime is 1145916907. The next prime is 1145916983. The reversal of 1145916931 is 1396195411.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1145916931 - 2¹¹ = 1145914883 is a prime.

It is a super-2 number, since 2×1145916931² = 2626251225504917522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1145916901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 572958465 + 572958466.

It is an arithmetic number, because the mean of its divisors is an integer number (572958466).

Almost surely, 2^1145916931 is an apocalyptic number.

1145916931 is a deficient number, since it is larger than the sum of its proper divisors (1).

1145916931 is an equidigital number, since it uses as much as digits as its factorization.

1145916931 is an evil number, because the sum of its binary digits is even.

The product of its digits is 29160, while the sum is 40.

The square root of 1145916931 is about 33851.3948161667. The cubic root of 1145916931 is about 1046.4481440407.

The spelling of 1145916931 in words is "one billion, one hundred forty-five million, nine hundred sixteen thousand, nine hundred thirty-one".