137636401 has 4 divisors (see below), whose sum is σ = 157298752. Its totient is φ = 117974052.

The previous prime is 137636363. The next prime is 137636413. The reversal of 137636401 is 104636731.

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, and also an emirpimes, since its reverse is a distinct semiprime: 104636731 = 3779 ⋅27689.

It is not a de Polignac number, because 137636401 - 2¹⁵ = 137603633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (137636441) 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, 9831165 + ... + 9831178.

It is an arithmetic number, because the mean of its divisors is an integer number (39324688).

Almost surely, 2^137636401 is an apocalyptic number.

It is an amenable number.

137636401 is a deficient number, since it is larger than the sum of its proper divisors (19662351).

137636401 is an equidigital number, since it uses as much as digits as its factorization.

137636401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19662350.

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 137636401 is about 11731.8541160381. The cubic root of 137636401 is about 516.3106728871.

It can be divided in two parts, 13763 and 6401, that added together give a square (20164 = 142²).

The spelling of 137636401 in words is "one hundred thirty-seven million, six hundred thirty-six thousand, four hundred one".