1148538857 has 16 divisors (see below), whose sum is σ = 1186545600. Its totient is φ = 1111283712.

The previous prime is 1148538841. The next prime is 1148538907. The reversal of 1148538857 is 7588358411.

It is a cyclic number.

It is not a de Polignac number, because 1148538857 - 2⁴ = 1148538841 is a prime.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1148538757) 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 in 15 ways as a sum of consecutive naturals, for example, 2195798 + ... + 2196320.

It is an arithmetic number, because the mean of its divisors is an integer number (74159100).

Almost surely, 2^1148538857 is an apocalyptic number.

It is an amenable number.

1148538857 is a deficient number, since it is larger than the sum of its proper divisors (38006743).

1148538857 is an equidigital number, since it uses as much as digits as its factorization.

1148538857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1112.

The product of its digits is 1075200, while the sum is 50.

The square root of 1148538857 is about 33890.0996900275. The cubic root of 1148538857 is about 1047.2456479400.

The spelling of 1148538857 in words is "one billion, one hundred forty-eight million, five hundred thirty-eight thousand, eight hundred fifty-seven".