138738022 has 8 divisors (see below), whose sum is σ = 208261872. Its totient is φ = 69317400.

The previous prime is 138738011. The next prime is 138738029. The reversal of 138738022 is 220837831.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138738029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22354 + ... + 27877.

It is an arithmetic number, because the mean of its divisors is an integer number (26032734).

Almost surely, 2^138738022 is an apocalyptic number.

138738022 is a deficient number, since it is larger than the sum of its proper divisors (69523850).

138738022 is a wasteful number, since it uses less digits than its factorization.

138738022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51614.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 138738022 is about 11778.7105406322. The cubic root of 138738022 is about 517.6845049899.

The spelling of 138738022 in words is "one hundred thirty-eight million, seven hundred thirty-eight thousand, twenty-two".