137691383 has 4 divisors (see below), whose sum is σ = 137777640. Its totient is φ = 137605128.

The previous prime is 137691373. The next prime is 137691401. The reversal of 137691383 is 383196731.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 137691383 - 2¹² = 137687287 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 137691383.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137691343) 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, 40688 + ... + 43941.

It is an arithmetic number, because the mean of its divisors is an integer number (34444410).

Almost surely, 2^137691383 is an apocalyptic number.

137691383 is a deficient number, since it is larger than the sum of its proper divisors (86257).

137691383 is an equidigital number, since it uses as much as digits as its factorization.

137691383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86256.

The product of its digits is 81648, while the sum is 41.

The square root of 137691383 is about 11734.1971604367. The cubic root of 137691383 is about 516.3794144264.

The spelling of 137691383 in words is "one hundred thirty-seven million, six hundred ninety-one thousand, three hundred eighty-three".