138391701 has 8 divisors (see below), whose sum is σ = 210882624. Its totient is φ = 79080960.

The previous prime is 138391681. The next prime is 138391703. The reversal of 138391701 is 107193831.

138391701 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 not a de Polignac number, because 138391701 - 2⁹ = 138391189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138391703) 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, 3295020 + ... + 3295061.

It is an arithmetic number, because the mean of its divisors is an integer number (26360328).

Almost surely, 2^138391701 is an apocalyptic number.

It is an amenable number.

138391701 is a deficient number, since it is larger than the sum of its proper divisors (72490923).

138391701 is an equidigital number, since it uses as much as digits as its factorization.

138391701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6590091.

The product of its (nonzero) digits is 4536, while the sum is 33.

The square root of 138391701 is about 11764.0002125127. Note that the first 3 decimals coincide. The cubic root of 138391701 is about 517.2533941367.

The spelling of 138391701 in words is "one hundred thirty-eight million, three hundred ninety-one thousand, seven hundred one".