138008458 has 16 divisors (see below), whose sum is σ = 236893824. Its totient is φ = 59069520.

The previous prime is 138008443. The next prime is 138008459. The reversal of 138008458 is 854800831.

138008458 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (138008459) 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, 5491 + ... + 17497.

It is an arithmetic number, because the mean of its divisors is an integer number (14805864).

Almost surely, 2^138008458 is an apocalyptic number.

138008458 is a deficient number, since it is larger than the sum of its proper divisors (98885366).

138008458 is a wasteful number, since it uses less digits than its factorization.

138008458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12837.

The product of its (nonzero) digits is 30720, while the sum is 37.

The square root of 138008458 is about 11747.7001153417. The cubic root of 138008458 is about 516.7754825031.

The spelling of 138008458 in words is "one hundred thirty-eight million, eight thousand, four hundred fifty-eight".