135814815 has 24 divisors (see below), whose sum is σ = 237116880. Its totient is φ = 71910144.

The previous prime is 135814807. The next prime is 135814817. The reversal of 135814815 is 518418531.

135814815 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 135814815 - 2³ = 135814807 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 135814815.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135814817) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4602 + ... + 17111.

It is an arithmetic number, because the mean of its divisors is an integer number (9879870).

Almost surely, 2^135814815 is an apocalyptic number.

135814815 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

135814815 is a deficient number, since it is larger than the sum of its proper divisors (101302065).

135814815 is a wasteful number, since it uses less digits than its factorization.

135814815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21863 (or 21860 counting only the distinct ones).

The product of its digits is 19200, while the sum is 36.

The square root of 135814815 is about 11653.9613436805. The cubic root of 135814815 is about 514.0227989806.

The spelling of 135814815 in words is "one hundred thirty-five million, eight hundred fourteen thousand, eight hundred fifteen".