1148656857 has 16 divisors (see below), whose sum is σ = 1585233408. Its totient is φ = 739059840.

The previous prime is 1148656841. The next prime is 1148656879. The reversal of 1148656857 is 7586568411.

It is not a de Polignac number, because 1148656857 - 2⁴ = 1148656841 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1148656057) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18133 + ... + 51245.

It is an arithmetic number, because the mean of its divisors is an integer number (99077088).

Almost surely, 2^1148656857 is an apocalyptic number.

It is an amenable number.

1148656857 is a deficient number, since it is larger than the sum of its proper divisors (436576551).

1148656857 is a wasteful number, since it uses less digits than its factorization.

1148656857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33520.

The product of its digits is 1612800, while the sum is 51.

The square root of 1148656857 is about 33891.8405667205. The cubic root of 1148656857 is about 1047.2815111164.

The spelling of 1148656857 in words is "one billion, one hundred forty-eight million, six hundred fifty-six thousand, eight hundred fifty-seven".