138914154 has 24 divisors (see below), whose sum is σ = 302161860. Its totient is φ = 46123008.

The previous prime is 138914119. The next prime is 138914159. The reversal of 138914154 is 451419831.

It can be written as a sum of positive squares in 2 ways, for example, as 85988529 + 52925625 = 9273^2 + 7275^2 .

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

It is not an unprimeable number, because it can be changed into a prime (138914159) 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, 10389 + ... + 19640.

Almost surely, 2^138914154 is an apocalyptic number.

138914154 is an abundant number, since it is smaller than the sum of its proper divisors (163247706).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

138914154 is a wasteful number, since it uses less digits than its factorization.

138914154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30294 (or 30291 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 138914154 is about 11786.1848789165. The cubic root of 138914154 is about 517.9034842516.

The spelling of 138914154 in words is "one hundred thirty-eight million, nine hundred fourteen thousand, one hundred fifty-four".