189615453 has 8 divisors (see below), whose sum is σ = 253422816. Its totient is φ = 126109200.

The previous prime is 189615451. The next prime is 189615457. The reversal of 189615453 is 354516981.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 189615453 - 2¹ = 189615451 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189615451) 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, 73803 + ... + 76328.

It is an arithmetic number, because the mean of its divisors is an integer number (31677852).

Almost surely, 2^189615453 is an apocalyptic number.

It is an amenable number.

189615453 is a deficient number, since it is larger than the sum of its proper divisors (63807363).

189615453 is a wasteful number, since it uses less digits than its factorization.

189615453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150555.

The product of its digits is 129600, while the sum is 42.

The square root of 189615453 is about 13770.0927012130. The cubic root of 189615453 is about 574.5016001307.

The spelling of 189615453 in words is "one hundred eighty-nine million, six hundred fifteen thousand, four hundred fifty-three".