1157008281 has 16 divisors (see below), whose sum is σ = 1812377280. Its totient is φ = 647277120.

The previous prime is 1157008247. The next prime is 1157008301. The reversal of 1157008281 is 1828007511.

It is not a de Polignac number, because 1157008281 - 2⁶ = 1157008217 is a prime.

It is a super-2 number, since 2×1157008281² = 2677336324605149922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (1157000281) 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, 1348066 + ... + 1348923.

It is an arithmetic number, because the mean of its divisors is an integer number (113273580).

Almost surely, 2^1157008281 is an apocalyptic number.

1157008281 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1157008281 is a deficient number, since it is larger than the sum of its proper divisors (655368999).

1157008281 is a wasteful number, since it uses less digits than its factorization.

1157008281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2697016.

The product of its (nonzero) digits is 4480, while the sum is 33.

The square root of 1157008281 is about 34014.8244299452. The cubic root of 1157008281 is about 1049.8135061072.

The spelling of 1157008281 in words is "one billion, one hundred fifty-seven million, eight thousand, two hundred eighty-one".