1157131841 has 4 divisors (see below), whose sum is σ = 1158039252. Its totient is φ = 1156224432.

The previous prime is 1157131831. The next prime is 1157131853. The reversal of 1157131841 is 1481317511.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 931531441 + 225600400 = 30521^2 + 15020^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1157131841 is a prime.

It is a super-3 number, since 3×1157131841³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1157131798 and 1157131807.

It is not an unprimeable number, because it can be changed into a prime (1157131831) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 451790 + ... + 454343.

It is an arithmetic number, because the mean of its divisors is an integer number (289509813).

Almost surely, 2^1157131841 is an apocalyptic number.

It is an amenable number.

1157131841 is a deficient number, since it is larger than the sum of its proper divisors (907411).

1157131841 is an equidigital number, since it uses as much as digits as its factorization.

1157131841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 907410.

The product of its digits is 3360, while the sum is 32.

The square root of 1157131841 is about 34016.6406483650. The cubic root of 1157131841 is about 1049.8508755717.

The spelling of 1157131841 in words is "one billion, one hundred fifty-seven million, one hundred thirty-one thousand, eight hundred forty-one".