138737835 has 24 divisors (see below), whose sum is σ = 245020464. Its totient is φ = 72596160.

The previous prime is 138737821. The next prime is 138737873. The reversal of 138737835 is 538737831.

138737835 = 946² + 947² + ... + 1080².

It is not a de Polignac number, because 138737835 - 2¹¹ = 138735787 is a prime.

It is a super-3 number, since 3×138737835³ (a number of 25 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 26701 + ... + 31470.

It is an arithmetic number, because the mean of its divisors is an integer number (10209186).

Almost surely, 2^138737835 is an apocalyptic number.

138737835 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

138737835 is a deficient number, since it is larger than the sum of its proper divisors (106282629).

138737835 is a wasteful number, since it uses less digits than its factorization.

138737835 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58235 (or 58232 counting only the distinct ones).

The product of its digits is 423360, while the sum is 45.

The square root of 138737835 is about 11778.7026025789. The cubic root of 138737835 is about 517.6842724004.

The spelling of 138737835 in words is "one hundred thirty-eight million, seven hundred thirty-seven thousand, eight hundred thirty-five".