138092215 has 8 divisors (see below), whose sum is σ = 167177808. Its totient is φ = 109495680.

The previous prime is 138092183. The next prime is 138092219. The reversal of 138092215 is 512290831.

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

It is not a de Polignac number, because 138092215 - 2⁵ = 138092183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138092219) 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, 121641 + ... + 122770.

It is an arithmetic number, because the mean of its divisors is an integer number (20897226).

Almost surely, 2^138092215 is an apocalyptic number.

138092215 is a deficient number, since it is larger than the sum of its proper divisors (29085593).

138092215 is a wasteful number, since it uses less digits than its factorization.

138092215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244529.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 138092215 is about 11751.2644000550. The cubic root of 138092215 is about 516.8800046255.

The spelling of 138092215 in words is "one hundred thirty-eight million, ninety-two thousand, two hundred fifteen".