1139757791 has 2 divisors, whose sum is σ = 1139757792. Its totient is φ = 1139757790.

The previous prime is 1139757781. The next prime is 1139757793. The reversal of 1139757791 is 1977579311.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1139757791 - 2¹⁰ = 1139756767 is a prime.

Together with 1139757793, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1139757793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 569878895 + 569878896.

It is an arithmetic number, because the mean of its divisors is an integer number (569878896).

Almost surely, 2^1139757791 is an apocalyptic number.

1139757791 is a deficient number, since it is larger than the sum of its proper divisors (1).

1139757791 is an equidigital number, since it uses as much as digits as its factorization.

1139757791 is an evil number, because the sum of its binary digits is even.

The product of its digits is 416745, while the sum is 50.

The square root of 1139757791 is about 33760.2990359979. The cubic root of 1139757791 is about 1044.5699384941.

The spelling of 1139757791 in words is "one billion, one hundred thirty-nine million, seven hundred fifty-seven thousand, seven hundred ninety-one".