1137879791 has 4 divisors (see below), whose sum is σ = 1138073232. Its totient is φ = 1137686352.

The previous prime is 1137879767. The next prime is 1137879797. The reversal of 1137879791 is 1979787311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1979787311 = 15233 ⋅129967.

It is a cyclic number.

It is not a de Polignac number, because 1137879791 - 2⁶ = 1137879727 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1137879797) 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, 87611 + ... + 99756.

It is an arithmetic number, because the mean of its divisors is an integer number (284518308).

Almost surely, 2^1137879791 is an apocalyptic number.

1137879791 is a deficient number, since it is larger than the sum of its proper divisors (193441).

1137879791 is an equidigital number, since it uses as much as digits as its factorization.

1137879791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193440.

The product of its digits is 666792, while the sum is 53.

The square root of 1137879791 is about 33732.4738345707. The cubic root of 1137879791 is about 1043.9959040248.

The spelling of 1137879791 in words is "one billion, one hundred thirty-seven million, eight hundred seventy-nine thousand, seven hundred ninety-one".