137745609 has 16 divisors (see below), whose sum is σ = 190802304. Its totient is φ = 88323200.

The previous prime is 137745607. The next prime is 137745613. The reversal of 137745609 is 906547731.

It is a cyclic number.

It is not a de Polignac number, because 137745609 - 2¹ = 137745607 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (137745607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 847 + ... + 16619.

It is an arithmetic number, because the mean of its divisors is an integer number (11925144).

Almost surely, 2^137745609 is an apocalyptic number.

It is an amenable number.

137745609 is a deficient number, since it is larger than the sum of its proper divisors (53056695).

137745609 is a wasteful number, since it uses less digits than its factorization.

137745609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15888.

The product of its (nonzero) digits is 158760, while the sum is 42.

The square root of 137745609 is about 11736.5075299256. The cubic root of 137745609 is about 516.4471928511.

The spelling of 137745609 in words is "one hundred thirty-seven million, seven hundred forty-five thousand, six hundred nine".