1137379261 has 4 divisors (see below), whose sum is σ = 1140018624. Its totient is φ = 1134739900.

The previous prime is 1137379249. The next prime is 1137379267. The reversal of 1137379261 is 1629737311.

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 not a de Polignac number, because 1137379261 - 2¹⁵ = 1137346493 is a prime.

It is a super-2 number, since 2×1137379261² = 2587263166705812242, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1137379267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1319035 + ... + 1319896.

It is an arithmetic number, because the mean of its divisors is an integer number (285004656).

Almost surely, 2^1137379261 is an apocalyptic number.

It is an amenable number.

1137379261 is a deficient number, since it is larger than the sum of its proper divisors (2639363).

1137379261 is an equidigital number, since it uses as much as digits as its factorization.

1137379261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2639362.

The product of its digits is 47628, while the sum is 40.

The square root of 1137379261 is about 33725.0539065544. The cubic root of 1137379261 is about 1043.8428041067.

The spelling of 1137379261 in words is "one billion, one hundred thirty-seven million, three hundred seventy-nine thousand, two hundred sixty-one".