138836054 has 16 divisors (see below), whose sum is σ = 238195968. Its totient is φ = 59453352.

The previous prime is 138836051. The next prime is 138836057. The reversal of 138836054 is 450638831.

It is an interprime number because it is at equal distance from previous prime (138836051) and next prime (138836057).

It is a junction number, because it is equal to n+sod(n) for n = 138835999 and 138836017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138836051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18389 + ... + 24815.

It is an arithmetic number, because the mean of its divisors is an integer number (14887248).

Almost surely, 2^138836054 is an apocalyptic number.

138836054 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

138836054 is a deficient number, since it is larger than the sum of its proper divisors (99359914).

138836054 is a wasteful number, since it uses less digits than its factorization.

138836054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7979.

The product of its (nonzero) digits is 69120, while the sum is 38.

The square root of 138836054 is about 11782.8712120603. The cubic root of 138836054 is about 517.8064078832.

The spelling of 138836054 in words is "one hundred thirty-eight million, eight hundred thirty-six thousand, fifty-four".