137385784 has 8 divisors (see below), whose sum is σ = 257598360. Its totient is φ = 68692888.

The previous prime is 137385779. The next prime is 137385797. The reversal of 137385784 is 487583731.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8586604 + ... + 8586619.

It is an arithmetic number, because the mean of its divisors is an integer number (32199795).

Almost surely, 2^137385784 is an apocalyptic number.

It is an amenable number.

137385784 is a deficient number, since it is larger than the sum of its proper divisors (120212576).

137385784 is a wasteful number, since it uses less digits than its factorization.

137385784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17173229 (or 17173225 counting only the distinct ones).

The product of its digits is 564480, while the sum is 46.

The square root of 137385784 is about 11721.1682011649. The cubic root of 137385784 is about 515.9971055263.

The spelling of 137385784 in words is "one hundred thirty-seven million, three hundred eighty-five thousand, seven hundred eighty-four".