162138915 has 40 divisors (see below), whose sum is σ = 295458768. Its totient is φ = 85043520.

The previous prime is 162138881. The next prime is 162138931. The reversal of 162138915 is 519831261.

It is not a de Polignac number, because 162138915 - 2⁷ = 162138787 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 162138915.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 21424 + ... + 27986.

Almost surely, 2^162138915 is an apocalyptic number.

162138915 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

162138915 is a deficient number, since it is larger than the sum of its proper divisors (133319853).

162138915 is an equidigital number, since it uses as much as digits as its factorization.

162138915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6641 (or 6632 counting only the distinct ones).

The product of its digits is 12960, while the sum is 36.

The square root of 162138915 is about 12733.3779885779. The cubic root of 162138915 is about 545.2919514237.

The spelling of 162138915 in words is "one hundred sixty-two million, one hundred thirty-eight thousand, nine hundred fifteen".