1157126377 has 4 divisors (see below), whose sum is σ = 1262319696. Its totient is φ = 1051933060.

The previous prime is 1157126357. The next prime is 1157126407. The reversal of 1157126377 is 7736217511.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1157126377 is a prime.

It is a super-2 number, since 2×1157126377² = 2677882904698292258, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1157126357) 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, 52596643 + ... + 52596664.

It is an arithmetic number, because the mean of its divisors is an integer number (315579924).

Almost surely, 2^1157126377 is an apocalyptic number.

It is an amenable number.

1157126377 is a deficient number, since it is larger than the sum of its proper divisors (105193319).

1157126377 is a wasteful number, since it uses less digits than its factorization.

1157126377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105193318.

The product of its digits is 61740, while the sum is 40.

The square root of 1157126377 is about 34016.5603346370. The cubic root of 1157126377 is about 1049.8492230967.

The spelling of 1157126377 in words is "one billion, one hundred fifty-seven million, one hundred twenty-six thousand, three hundred seventy-seven".