133189902 has 12 divisors (see below), whose sum is σ = 288578160. Its totient is φ = 44396628.

The previous prime is 133189897. The next prime is 133189921. The reversal of 133189902 is 209981331.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3699702 + ... + 3699737.

It is an arithmetic number, because the mean of its divisors is an integer number (24048180).

Almost surely, 2^133189902 is an apocalyptic number.

133189902 is an abundant number, since it is smaller than the sum of its proper divisors (155388258).

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

133189902 is a wasteful number, since it uses less digits than its factorization.

133189902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7399447 (or 7399444 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 133189902 is about 11540.7929536926. The cubic root of 133189902 is about 510.6897012298.

It can be divided in two parts, 13318 and 9902, that added together give a triangular number (23220 = T₂₁₅).

The spelling of 133189902 in words is "one hundred thirty-three million, one hundred eighty-nine thousand, nine hundred two".