138734901 has 12 divisors (see below), whose sum is σ = 203792160. Its totient is φ = 90921960.

The previous prime is 138734887. The next prime is 138734917. The reversal of 138734901 is 109437831.

It is a happy number.

It is not a de Polignac number, because 138734901 - 2⁹ = 138734389 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138730901) 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 11 ways as a sum of consecutive naturals, for example, 130105 + ... + 131166.

It is an arithmetic number, because the mean of its divisors is an integer number (16982680).

Almost surely, 2^138734901 is an apocalyptic number.

It is an amenable number.

138734901 is a deficient number, since it is larger than the sum of its proper divisors (65057259).

138734901 is a wasteful number, since it uses less digits than its factorization.

138734901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261336 (or 261333 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 138734901 is about 11778.5780550965. The cubic root of 138734901 is about 517.6806230801.

The spelling of 138734901 in words is "one hundred thirty-eight million, seven hundred thirty-four thousand, nine hundred one".