137474369 has 4 divisors (see below), whose sum is σ = 137498244. Its totient is φ = 137450496.

The previous prime is 137474357. The next prime is 137474399. The reversal of 137474369 is 963474731.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 963474731 = 4943 ⋅194917.

It can be written as a sum of positive squares in 2 ways, for example, as 88642225 + 48832144 = 9415^2 + 6988^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-137474369 is a prime.

It is a super-2 number, since 2×137474369² = 37798404263896322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (137474339) 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, 2609 + ... + 16785.

It is an arithmetic number, because the mean of its divisors is an integer number (34374561).

Almost surely, 2^137474369 is an apocalyptic number.

It is an amenable number.

137474369 is a deficient number, since it is larger than the sum of its proper divisors (23875).

137474369 is an equidigital number, since it uses as much as digits as its factorization.

137474369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23874.

The product of its digits is 381024, while the sum is 44.

The square root of 137474369 is about 11724.9464391101. The cubic root of 137474369 is about 516.1079849817.

The spelling of 137474369 in words is "one hundred thirty-seven million, four hundred seventy-four thousand, three hundred sixty-nine".