189412908 has 12 divisors (see below), whose sum is σ = 441963480. Its totient is φ = 63137632.

The previous prime is 189412901. The next prime is 189412913. The reversal of 189412908 is 809214981.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 189412908.

It is not an unprimeable number, because it can be changed into a prime (189412901) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 7892193 + ... + 7892216.

It is an arithmetic number, because the mean of its divisors is an integer number (36830290).

Almost surely, 2^189412908 is an apocalyptic number.

It is an amenable number.

189412908 is an abundant number, since it is smaller than the sum of its proper divisors (252550572).

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

189412908 is a wasteful number, since it uses less digits than its factorization.

189412908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15784416 (or 15784414 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 42.

The square root of 189412908 is about 13762.7362105070. The cubic root of 189412908 is about 574.2969686310.

The spelling of 189412908 in words is "one hundred eighty-nine million, four hundred twelve thousand, nine hundred eight".