138492022 has 8 divisors (see below), whose sum is σ = 208193976. Its totient is φ = 69094032.

The previous prime is 138492001. The next prime is 138492031. The reversal of 138492022 is 220294831.

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 pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74848 + ... + 76675.

It is an arithmetic number, because the mean of its divisors is an integer number (26024247).

Almost surely, 2^138492022 is an apocalyptic number.

138492022 is a deficient number, since it is larger than the sum of its proper divisors (69701954).

138492022 is a wasteful number, since it uses less digits than its factorization.

138492022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151982.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 138492022 is about 11768.2633383180. The cubic root of 138492022 is about 517.3783506758.

The spelling of 138492022 in words is "one hundred thirty-eight million, four hundred ninety-two thousand, twenty-two".