137118961 has 4 divisors (see below), whose sum is σ = 156707392. Its totient is φ = 117530532.

The previous prime is 137118941. The next prime is 137118997. The reversal of 137118961 is 169811731.

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, and also an emirpimes, since its reverse is a distinct semiprime: 169811731 = 151 ⋅1124581.

It is not a de Polignac number, because 137118961 - 2¹⁷ = 136987889 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 137118961.

It is not an unprimeable number, because it can be changed into a prime (137118901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9794205 + ... + 9794218.

It is an arithmetic number, because the mean of its divisors is an integer number (39176848).

Almost surely, 2^137118961 is an apocalyptic number.

It is an amenable number.

137118961 is a deficient number, since it is larger than the sum of its proper divisors (19588431).

137118961 is an equidigital number, since it uses as much as digits as its factorization.

137118961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19588430.

The product of its digits is 9072, while the sum is 37.

The square root of 137118961 is about 11709.7805701046. The cubic root of 137118961 is about 515.6628421128.

The spelling of 137118961 in words is "one hundred thirty-seven million, one hundred eighteen thousand, nine hundred sixty-one".