138773454 has 48 divisors (see below), whose sum is σ = 296997120. Its totient is φ = 43215120.

The previous prime is 138773449. The next prime is 138773461. The reversal of 138773454 is 454377831.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 170709 + ... + 171519.

It is an arithmetic number, because the mean of its divisors is an integer number (6187440).

Almost surely, 2^138773454 is an apocalyptic number.

138773454 is an abundant number, since it is smaller than the sum of its proper divisors (158223666).

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

138773454 is a wasteful number, since it uses less digits than its factorization.

138773454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 933 (or 914 counting only the distinct ones).

The product of its digits is 282240, while the sum is 42.

The square root of 138773454 is about 11780.2145141759. The cubic root of 138773454 is about 517.7285713433.

The spelling of 138773454 in words is "one hundred thirty-eight million, seven hundred seventy-three thousand, four hundred fifty-four".