1157977927 has 2 divisors, whose sum is σ = 1157977928. Its totient is φ = 1157977926.

The previous prime is 1157977907. The next prime is 1157977939. The reversal of 1157977927 is 7297797511.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1157977927 - 2¹¹ = 1157975879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1157977907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 578988963 + 578988964.

It is an arithmetic number, because the mean of its divisors is an integer number (578988964).

Almost surely, 2^1157977927 is an apocalyptic number.

1157977927 is a deficient number, since it is larger than the sum of its proper divisors (1).

1157977927 is an equidigital number, since it uses as much as digits as its factorization.

1157977927 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1944810, while the sum is 55.

The square root of 1157977927 is about 34029.0747302950. The cubic root of 1157977927 is about 1050.1066942223.

The spelling of 1157977927 in words is "one billion, one hundred fifty-seven million, nine hundred seventy-seven thousand, nine hundred twenty-seven".