136178990 has 16 divisors (see below), whose sum is σ = 245261952. Its totient is φ = 54440544.

The previous prime is 136178971. The next prime is 136179011. The reversal of 136178990 is 99871631.

It is a congruent number.

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, 24227 + ... + 29313.

It is an arithmetic number, because the mean of its divisors is an integer number (15328872).

Almost surely, 2^136178990 is an apocalyptic number.

136178990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

136178990 is a deficient number, since it is larger than the sum of its proper divisors (109082962).

136178990 is a wasteful number, since it uses less digits than its factorization.

136178990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7771.

The product of its (nonzero) digits is 81648, while the sum is 44.

The square root of 136178990 is about 11669.5753993022. The cubic root of 136178990 is about 514.4818239819.

The spelling of 136178990 in words is "one hundred thirty-six million, one hundred seventy-eight thousand, nine hundred ninety".