189563265 has 24 divisors (see below), whose sum is σ = 332741760. Its totient is φ = 99818784.

The previous prime is 189563251. The next prime is 189563279. The reversal of 189563265 is 562365981.

189563265 is a `hidden beast` number, since 1 + 8 + 9 + 5 + 632 + 6 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (189563251) and next prime (189563279).

It is not a de Polignac number, because 189563265 - 2⁷ = 189563137 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 189563265.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23107 + ... + 30216.

It is an arithmetic number, because the mean of its divisors is an integer number (13864240).

Almost surely, 2^189563265 is an apocalyptic number.

189563265 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

189563265 is a deficient number, since it is larger than the sum of its proper divisors (143178495).

189563265 is a wasteful number, since it uses less digits than its factorization.

189563265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53413 (or 53410 counting only the distinct ones).

The product of its digits is 388800, while the sum is 45.

The square root of 189563265 is about 13768.1975944566. The cubic root of 189563265 is about 574.4488884624.

The spelling of 189563265 in words is "one hundred eighty-nine million, five hundred sixty-three thousand, two hundred sixty-five".