138084015 has 8 divisors (see below), whose sum is σ = 220934448. Its totient is φ = 73644800.

The previous prime is 138084007. The next prime is 138084017. The reversal of 138084015 is 510480831.

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

It is not a de Polignac number, because 138084015 - 2³ = 138084007 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138084017) 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, 4602786 + ... + 4602815.

It is an arithmetic number, because the mean of its divisors is an integer number (27616806).

Almost surely, 2^138084015 is an apocalyptic number.

138084015 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

138084015 is a deficient number, since it is larger than the sum of its proper divisors (82850433).

138084015 is an equidigital number, since it uses as much as digits as its factorization.

138084015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9205609.

The product of its (nonzero) digits is 3840, while the sum is 30.

The square root of 138084015 is about 11750.9154962496. The cubic root of 138084015 is about 516.8697735396.

The spelling of 138084015 in words is "one hundred thirty-eight million, eighty-four thousand, fifteen".