138558092 has 12 divisors (see below), whose sum is σ = 256740120. Its totient is φ = 65203776.

The previous prime is 138558071. The next prime is 138558097. The reversal of 138558092 is 290855831.

It is not an unprimeable number, because it can be changed into a prime (138558097) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1018742 + ... + 1018877.

It is an arithmetic number, because the mean of its divisors is an integer number (21395010).

Almost surely, 2^138558092 is an apocalyptic number.

It is an amenable number.

138558092 is a deficient number, since it is larger than the sum of its proper divisors (118182028).

138558092 is a wasteful number, since it uses less digits than its factorization.

138558092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2037640 (or 2037638 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 41.

The square root of 138558092 is about 11771.0701297715. The cubic root of 138558092 is about 517.4606123414.

The spelling of 138558092 in words is "one hundred thirty-eight million, five hundred fifty-eight thousand, ninety-two".