1140931157 has 4 divisors (see below), whose sum is σ = 1165206336. Its totient is φ = 1116655980.

The previous prime is 1140931153. The next prime is 1140931177. The reversal of 1140931157 is 7511390411.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7511390411 = 7 ⋅1073055773.

It is a cyclic number.

It is not a de Polignac number, because 1140931157 - 2² = 1140931153 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1140931153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12137519 + ... + 12137612.

It is an arithmetic number, because the mean of its divisors is an integer number (291301584).

Almost surely, 2^1140931157 is an apocalyptic number.

It is an amenable number.

1140931157 is a deficient number, since it is larger than the sum of its proper divisors (24275179).

1140931157 is an equidigital number, since it uses as much as digits as its factorization.

1140931157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24275178.

The product of its (nonzero) digits is 3780, while the sum is 32.

The square root of 1140931157 is about 33777.6724627379. The cubic root of 1140931157 is about 1044.9282726651.

The spelling of 1140931157 in words is "one billion, one hundred forty million, nine hundred thirty-one thousand, one hundred fifty-seven".