189213465 has 32 divisors (see below), whose sum is σ = 346567680. Its totient is φ = 86353344.

The previous prime is 189213443. The next prime is 189213473. The reversal of 189213465 is 564312981.

189213465 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 189213465 - 2⁷ = 189213337 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 85746 + ... + 87924.

It is an arithmetic number, because the mean of its divisors is an integer number (10830240).

Almost surely, 2^189213465 is an apocalyptic number.

189213465 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

189213465 is a deficient number, since it is larger than the sum of its proper divisors (157354215).

189213465 is a wasteful number, since it uses less digits than its factorization.

189213465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3021.

The product of its digits is 51840, while the sum is 39.

The square root of 189213465 is about 13755.4885409425. The cubic root of 189213465 is about 574.0953284917.

The spelling of 189213465 in words is "one hundred eighty-nine million, two hundred thirteen thousand, four hundred sixty-five".