137626189 has 4 divisors (see below), whose sum is σ = 137816224. Its totient is φ = 137436156.

The previous prime is 137626123. The next prime is 137626207. The reversal of 137626189 is 981626731.

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: 981626731 = 3307 ⋅296833.

It is a cyclic number.

It is not a de Polignac number, because 137626189 - 2¹⁷ = 137495117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137626109) 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, 93927 + ... + 95380.

It is an arithmetic number, because the mean of its divisors is an integer number (34454056).

Almost surely, 2^137626189 is an apocalyptic number.

It is an amenable number.

137626189 is a deficient number, since it is larger than the sum of its proper divisors (190035).

137626189 is an equidigital number, since it uses as much as digits as its factorization.

137626189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190034.

The product of its digits is 108864, while the sum is 43.

The square root of 137626189 is about 11731.4188826416. The cubic root of 137626189 is about 516.2979032638.

The spelling of 137626189 in words is "one hundred thirty-seven million, six hundred twenty-six thousand, one hundred eighty-nine".