1150831857 has 16 divisors (see below), whose sum is σ = 1754303360. Its totient is φ = 657372672.

The previous prime is 1150831837. The next prime is 1150831859. The reversal of 1150831857 is 7581380511.

It is a happy number.

It is not a de Polignac number, because 1150831857 - 2⁶ = 1150831793 is a prime.

It is a super-3 number, since 3×1150831857³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1150831859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57903 + ... + 75195.

It is an arithmetic number, because the mean of its divisors is an integer number (109643960).

Almost surely, 2^1150831857 is an apocalyptic number.

It is an amenable number.

1150831857 is a deficient number, since it is larger than the sum of its proper divisors (603471503).

1150831857 is a wasteful number, since it uses less digits than its factorization.

1150831857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20472.

The product of its (nonzero) digits is 33600, while the sum is 39.

The square root of 1150831857 is about 33923.9127607651. The cubic root of 1150831857 is about 1047.9421090650.

It can be divided in two parts, 11508 and 31857, that added together give a triangular number (43365 = T₂₉₄).

The spelling of 1150831857 in words is "one billion, one hundred fifty million, eight hundred thirty-one thousand, eight hundred fifty-seven".