189212454 has 12 divisors (see below), whose sum is σ = 409960356. Its totient is φ = 63070812.

The previous prime is 189212449. The next prime is 189212473. The reversal of 189212454 is 454212981.

189212454 is a `hidden beast` number, since 189 + 21 + 2 + 454 = 666.

189212454 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5255884 + ... + 5255919.

It is an arithmetic number, because the mean of its divisors is an integer number (34163363).

Almost surely, 2^189212454 is an apocalyptic number.

189212454 is an abundant number, since it is smaller than the sum of its proper divisors (220747902).

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

189212454 is a wasteful number, since it uses less digits than its factorization.

189212454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10511811 (or 10511808 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

The square root of 189212454 is about 13755.4517919260. The cubic root of 189212454 is about 574.0943059933.

The spelling of 189212454 in words is "one hundred eighty-nine million, two hundred twelve thousand, four hundred fifty-four".