138201958 has 8 divisors (see below), whose sum is σ = 208208880. Its totient is φ = 68799000.

The previous prime is 138201941. The next prime is 138201961. The reversal of 138201958 is 859102831.

138201958 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 150418 + ... + 151333.

It is an arithmetic number, because the mean of its divisors is an integer number (26026110).

Almost surely, 2^138201958 is an apocalyptic number.

138201958 is a deficient number, since it is larger than the sum of its proper divisors (70006922).

138201958 is a wasteful number, since it uses less digits than its factorization.

138201958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301982.

The product of its (nonzero) digits is 17280, while the sum is 37.

The square root of 138201958 is about 11755.9328851436. The cubic root of 138201958 is about 517.0168912768.

The spelling of 138201958 in words is "one hundred thirty-eight million, two hundred one thousand, nine hundred fifty-eight".