136166939 has 8 divisors (see below), whose sum is σ = 146667840. Its totient is φ = 125999496.

The previous prime is 136166929. The next prime is 136166959. The reversal of 136166939 is 939661631.

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 136166939 - 2⁸ = 136166683 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 136166939.

It is not an unprimeable number, because it can be changed into a prime (136166929) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82517 + ... + 84150.

It is an arithmetic number, because the mean of its divisors is an integer number (18333480).

Almost surely, 2^136166939 is an apocalyptic number.

136166939 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

136166939 is a deficient number, since it is larger than the sum of its proper divisors (10500901).

136166939 is a wasteful number, since it uses less digits than its factorization.

136166939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166729.

The product of its digits is 157464, while the sum is 44.

The square root of 136166939 is about 11669.0590451844. The cubic root of 136166939 is about 514.4666473790.

The spelling of 136166939 in words is "one hundred thirty-six million, one hundred sixty-six thousand, nine hundred thirty-nine".