136946988 has 18 divisors (see below), whose sum is σ = 346171644. Its totient is φ = 45648984.

The previous prime is 136946987. The next prime is 136947029. The reversal of 136946988 is 889649631.

136946988 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (136946983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1902006 + ... + 1902077.

It is an arithmetic number, because the mean of its divisors is an integer number (19231758).

Almost surely, 2^136946988 is an apocalyptic number.

136946988 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

136946988 is an abundant number, since it is smaller than the sum of its proper divisors (209224656).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

136946988 is a wasteful number, since it uses less digits than its factorization.

136946988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3804093 (or 3804088 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 54.

The square root of 136946988 is about 11702.4351312024. The cubic root of 136946988 is about 515.4471724855.

The spelling of 136946988 in words is "one hundred thirty-six million, nine hundred forty-six thousand, nine hundred eighty-eight".