1157977919 has 8 divisors (see below), whose sum is σ = 1323813408. Its totient is φ = 992244960.

The previous prime is 1157977907. The next prime is 1157977927. The reversal of 1157977919 is 9197797511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1157977919 - 2⁸ = 1157977663 is a prime.

It is a super-2 number, since 2×1157977919² = 2681825721783141122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1157977939) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 329 + ... + 48125.

It is an arithmetic number, because the mean of its divisors is an integer number (165476676).

Almost surely, 2^1157977919 is an apocalyptic number.

1157977919 is a deficient number, since it is larger than the sum of its proper divisors (165835489).

1157977919 is an equidigital number, since it uses as much as digits as its factorization.

1157977919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51265.

The product of its digits is 1250235, while the sum is 56.

The square root of 1157977919 is about 34029.0746127484. The cubic root of 1157977919 is about 1050.1066918040.

It can be divided in two parts, 11579 and 77919, that added together give a palindrome (89498).

The spelling of 1157977919 in words is "one billion, one hundred fifty-seven million, nine hundred seventy-seven thousand, nine hundred nineteen".