138450954 has 16 divisors (see below), whose sum is σ = 277360992. Its totient is φ = 46073808.

The previous prime is 138450953. The next prime is 138450979. The reversal of 138450954 is 459054831.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (138450953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15144 + ... + 22499.

It is an arithmetic number, because the mean of its divisors is an integer number (17335062).

Almost surely, 2^138450954 is an apocalyptic number.

138450954 is an abundant number, since it is smaller than the sum of its proper divisors (138910038).

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

138450954 is a wasteful number, since it uses less digits than its factorization.

138450954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38261.

The product of its (nonzero) digits is 86400, while the sum is 39.

The square root of 138450954 is about 11766.5183465628. The cubic root of 138450954 is about 517.3272050229.

The spelling of 138450954 in words is "one hundred thirty-eight million, four hundred fifty thousand, nine hundred fifty-four".