138670011858 has 48 divisors (see below), whose sum is σ = 322815862944. Its totient is φ = 39595953600.

The previous prime is 138670011853. The next prime is 138670011881. The reversal of 138670011858 is 858110076831.

It is a super-2 number, since 2×138670011858² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (138670011853) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 344833 + ... + 629483.

It is an arithmetic number, because the mean of its divisors is an integer number (6725330478).

Almost surely, 2^138670011858 is an apocalyptic number.

138670011858 is an abundant number, since it is smaller than the sum of its proper divisors (184145851086).

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

138670011858 is a wasteful number, since it uses less digits than its factorization.

138670011858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286327 (or 286320 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 48.

The spelling of 138670011858 in words is "one hundred thirty-eight billion, six hundred seventy million, eleven thousand, eight hundred fifty-eight".