137440373 has 4 divisors (see below), whose sum is σ = 157074720. Its totient is φ = 117806028.

The previous prime is 137440343. The next prime is 137440379. The reversal of 137440373 is 373044731.

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 137440373 - 2¹⁸ = 137178229 is a prime.

It is a super-2 number, since 2×137440373² = 37779712260758258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137440379) 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, 9817163 + ... + 9817176.

It is an arithmetic number, because the mean of its divisors is an integer number (39268680).

Almost surely, 2^137440373 is an apocalyptic number.

It is an amenable number.

137440373 is a deficient number, since it is larger than the sum of its proper divisors (19634347).

137440373 is an equidigital number, since it uses as much as digits as its factorization.

137440373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19634346.

The product of its (nonzero) digits is 21168, while the sum is 32.

The square root of 137440373 is about 11723.4966200362. The cubic root of 137440373 is about 516.0654387392.

The spelling of 137440373 in words is "one hundred thirty-seven million, four hundred forty thousand, three hundred seventy-three".