1148977331 has 2 divisors, whose sum is σ = 1148977332. Its totient is φ = 1148977330.

The previous prime is 1148977261. The next prime is 1148977337. The reversal of 1148977331 is 1337798411.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1148977331 - 2¹⁰ = 1148976307 is a prime.

It is a super-2 number, since 2×1148977331² = 2640297814303767122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1148977337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 574488665 + 574488666.

It is an arithmetic number, because the mean of its divisors is an integer number (574488666).

Almost surely, 2^1148977331 is an apocalyptic number.

1148977331 is a deficient number, since it is larger than the sum of its proper divisors (1).

1148977331 is an equidigital number, since it uses as much as digits as its factorization.

1148977331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 127008, while the sum is 44.

The square root of 1148977331 is about 33896.5681301220. The cubic root of 1148977331 is about 1047.3788988566.

The spelling of 1148977331 in words is "one billion, one hundred forty-eight million, nine hundred seventy-seven thousand, three hundred thirty-one".