137669973 has 16 divisors (see below), whose sum is σ = 218904576. Its totient is φ = 75247920.

The previous prime is 137669971. The next prime is 137669999. The reversal of 137669973 is 379966731.

It is not a de Polignac number, because 137669973 - 2¹ = 137669971 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137669971) 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, 142033 + ... + 142998.

It is an arithmetic number, because the mean of its divisors is an integer number (13681536).

Almost surely, 2^137669973 is an apocalyptic number.

It is an amenable number.

137669973 is a deficient number, since it is larger than the sum of its proper divisors (81234603).

137669973 is a wasteful number, since it uses less digits than its factorization.

137669973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285064.

The product of its digits is 1285956, while the sum is 51.

The square root of 137669973 is about 11733.2848341801. The cubic root of 137669973 is about 516.3526486354.

The spelling of 137669973 in words is "one hundred thirty-seven million, six hundred sixty-nine thousand, nine hundred seventy-three".