135990155 has 8 divisors (see below), whose sum is σ = 186500832. Its totient is φ = 93250368.

The previous prime is 135990139. The next prime is 135990161. The reversal of 135990155 is 551099531.

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

It is a cyclic number.

It is not a de Polignac number, because 135990155 - 2⁴ = 135990139 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1942682 + ... + 1942751.

It is an arithmetic number, because the mean of its divisors is an integer number (23312604).

Almost surely, 2^135990155 is an apocalyptic number.

135990155 is a deficient number, since it is larger than the sum of its proper divisors (50510677).

135990155 is an equidigital number, since it uses as much as digits as its factorization.

135990155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3885445.

The product of its (nonzero) digits is 30375, while the sum is 38.

The square root of 135990155 is about 11661.4816811587. The cubic root of 135990155 is about 514.2439088777.

The spelling of 135990155 in words is "one hundred thirty-five million, nine hundred ninety thousand, one hundred fifty-five".