137092391 has 8 divisors (see below), whose sum is σ = 145587120. Its totient is φ = 128725632.

The previous prime is 137092387. The next prime is 137092393. The reversal of 137092391 is 193290731.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 137092391 - 2² = 137092387 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137092393) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29780 + ... + 34073.

It is an arithmetic number, because the mean of its divisors is an integer number (18198390).

Almost surely, 2^137092391 is an apocalyptic number.

137092391 is a deficient number, since it is larger than the sum of its proper divisors (8494729).

137092391 is a wasteful number, since it uses less digits than its factorization.

137092391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63985.

The product of its (nonzero) digits is 10206, while the sum is 35.

The square root of 137092391 is about 11708.6459934529. The cubic root of 137092391 is about 515.6295327229.

The spelling of 137092391 in words is "one hundred thirty-seven million, ninety-two thousand, three hundred ninety-one".