1156747139 has 2 divisors, whose sum is σ = 1156747140. Its totient is φ = 1156747138.

The previous prime is 1156747091. The next prime is 1156747177. The reversal of 1156747139 is 9317476511.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1156747139 - 2²⁰ = 1155698563 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1156747139.

It is not a weakly prime, because it can be changed into another prime (1156747199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 578373569 + 578373570.

It is an arithmetic number, because the mean of its divisors is an integer number (578373570).

Almost surely, 2^1156747139 is an apocalyptic number.

1156747139 is a deficient number, since it is larger than the sum of its proper divisors (1).

1156747139 is an equidigital number, since it uses as much as digits as its factorization.

1156747139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 158760, while the sum is 44.

The square root of 1156747139 is about 34010.9855634911. The cubic root of 1156747139 is about 1049.7345176127.

The spelling of 1156747139 in words is "one billion, one hundred fifty-six million, seven hundred forty-seven thousand, one hundred thirty-nine".