137445387 has 12 divisors (see below), whose sum is σ = 184683576. Its totient is φ = 90924160.

The previous prime is 137445379. The next prime is 137445389. The reversal of 137445387 is 783544731.

It is not a de Polignac number, because 137445387 - 2³ = 137445379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (137445389) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 55087 + ... + 57527.

It is an arithmetic number, because the mean of its divisors is an integer number (15390298).

Almost surely, 2^137445387 is an apocalyptic number.

137445387 is a deficient number, since it is larger than the sum of its proper divisors (47238189).

137445387 is an equidigital number, since it uses as much as digits as its factorization.

137445387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2718 (or 2581 counting only the distinct ones).

The product of its digits is 282240, while the sum is 42.

The square root of 137445387 is about 11723.7104621361. The cubic root of 137445387 is about 516.0717142379.

The spelling of 137445387 in words is "one hundred thirty-seven million, four hundred forty-five thousand, three hundred eighty-seven".