136881154 has 8 divisors (see below), whose sum is σ = 205406208. Its totient is φ = 68412420.

The previous prime is 136881109. The next prime is 136881163. The reversal of 136881154 is 451188631.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7362 + ... + 18109.

It is an arithmetic number, because the mean of its divisors is an integer number (25675776).

Almost surely, 2^136881154 is an apocalyptic number.

136881154 is a deficient number, since it is larger than the sum of its proper divisors (68525054).

136881154 is a wasteful number, since it uses less digits than its factorization.

136881154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28160.

The product of its digits is 23040, while the sum is 37.

The square root of 136881154 is about 11699.6219597045. The cubic root of 136881154 is about 515.3645629328.

The spelling of 136881154 in words is "one hundred thirty-six million, eight hundred eighty-one thousand, one hundred fifty-four".