138347737 has 16 divisors (see below), whose sum is σ = 158209920. Its totient is φ = 119750400.

The previous prime is 138347687. The next prime is 138347747. The reversal of 138347737 is 737743831.

It is not a de Polignac number, because 138347737 - 2¹⁹ = 137823449 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 138347693 and 138347702.

It is not an unprimeable number, because it can be changed into a prime (138347747) 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, 59839 + ... + 62107.

It is an arithmetic number, because the mean of its divisors is an integer number (9888120).

Almost surely, 2^138347737 is an apocalyptic number.

It is an amenable number.

138347737 is a deficient number, since it is larger than the sum of its proper divisors (19862183).

138347737 is a wasteful number, since it uses less digits than its factorization.

138347737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2544.

The product of its digits is 296352, while the sum is 43.

The square root of 138347737 is about 11762.1314820061. The cubic root of 138347737 is about 517.1986149928.

The spelling of 138347737 in words is "one hundred thirty-eight million, three hundred forty-seven thousand, seven hundred thirty-seven".