1149147931 has 2 divisors, whose sum is σ = 1149147932. Its totient is φ = 1149147930.

The previous prime is 1149147899. The next prime is 1149147991. The reversal of 1149147931 is 1397419411.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1149147931 - 2⁵ = 1149147899 is a prime.

It is a super-2 number, since 2×1149147931² = 2641081934643161522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1149147991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 574573965 + 574573966.

It is an arithmetic number, because the mean of its divisors is an integer number (574573966).

Almost surely, 2^1149147931 is an apocalyptic number.

1149147931 is a deficient number, since it is larger than the sum of its proper divisors (1).

1149147931 is an equidigital number, since it uses as much as digits as its factorization.

1149147931 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27216, while the sum is 40.

The square root of 1149147931 is about 33899.0845156621. The cubic root of 1149147931 is about 1047.4307345173.

The spelling of 1149147931 in words is "one billion, one hundred forty-nine million, one hundred forty-seven thousand, nine hundred thirty-one".