1148642657 has 2 divisors, whose sum is σ = 1148642658. Its totient is φ = 1148642656.

The previous prime is 1148642641. The next prime is 1148642687. The reversal of 1148642657 is 7562468411.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 825757696 + 322884961 = 28736^2 + 17969^2 .

It is a cyclic number.

It is not a de Polignac number, because 1148642657 - 2⁴ = 1148642641 is a prime.

It is not a weakly prime, because it can be changed into another prime (1148642687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 574321328 + 574321329.

It is an arithmetic number, because the mean of its divisors is an integer number (574321329).

Almost surely, 2^1148642657 is an apocalyptic number.

It is an amenable number.

1148642657 is a deficient number, since it is larger than the sum of its proper divisors (1).

1148642657 is an equidigital number, since it uses as much as digits as its factorization.

1148642657 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 322560, while the sum is 44.

The square root of 1148642657 is about 33891.6310761226. The cubic root of 1148642657 is about 1047.2771955082.

The spelling of 1148642657 in words is "one billion, one hundred forty-eight million, six hundred forty-two thousand, six hundred fifty-seven".