189364455 has 48 divisors (see below), whose sum is σ = 380450304. Its totient is φ = 85337280.

The previous prime is 189364429. The next prime is 189364463. The reversal of 189364455 is 554463981.

189364455 = T₂₂₇₄ + T₂₂₇₅ + ... + T₂₃₄₄.

It is not a de Polignac number, because 189364455 - 2⁶ = 189364391 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 189364455.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 18132 + ... + 26598.

It is an arithmetic number, because the mean of its divisors is an integer number (7926048).

Almost surely, 2^189364455 is an apocalyptic number.

189364455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

189364455 is an abundant number, since it is smaller than the sum of its proper divisors (191085849).

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

189364455 is a wasteful number, since it uses less digits than its factorization.

189364455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8556 (or 8553 counting only the distinct ones).

The product of its digits is 518400, while the sum is 45.

The square root of 189364455 is about 13760.9758011560. The cubic root of 189364455 is about 574.2479948759.

The spelling of 189364455 in words is "one hundred eighty-nine million, three hundred sixty-four thousand, four hundred fifty-five".