137011691 has 4 divisors (see below), whose sum is σ = 137532912. Its totient is φ = 136490472.

The previous prime is 137011663. The next prime is 137011697. The reversal of 137011691 is 196110731.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 196110731 = 29 ⋅6762439.

It is a cyclic number.

It is not a de Polignac number, because 137011691 - 2¹⁴ = 136995307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (137011697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 260216 + ... + 260741.

It is an arithmetic number, because the mean of its divisors is an integer number (34383228).

Almost surely, 2^137011691 is an apocalyptic number.

137011691 is a deficient number, since it is larger than the sum of its proper divisors (521221).

137011691 is an equidigital number, since it uses as much as digits as its factorization.

137011691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521220.

The product of its (nonzero) digits is 1134, while the sum is 29.

The square root of 137011691 is about 11705.1993148344. The cubic root of 137011691 is about 515.5283370486.

The spelling of 137011691 in words is "one hundred thirty-seven million, eleven thousand, six hundred ninety-one".