137891545 has 16 divisors (see below), whose sum is σ = 180755712. Its totient is φ = 100149760.

The previous prime is 137891543. The next prime is 137891581. The reversal of 137891545 is 545198731.

It is not a de Polignac number, because 137891545 - 2¹ = 137891543 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (137891543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59529 + ... + 61801.

It is an arithmetic number, because the mean of its divisors is an integer number (11297232).

Almost surely, 2^137891545 is an apocalyptic number.

It is an amenable number.

137891545 is a deficient number, since it is larger than the sum of its proper divisors (42864167).

137891545 is a wasteful number, since it uses less digits than its factorization.

137891545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3392.

The product of its digits is 151200, while the sum is 43.

The square root of 137891545 is about 11742.7230657970. The cubic root of 137891545 is about 516.6295135731.

The spelling of 137891545 in words is "one hundred thirty-seven million, eight hundred ninety-one thousand, five hundred forty-five".