189015345 has 12 divisors (see below), whose sum is σ = 327626676. Its totient is φ = 100808160.

The previous prime is 189015317. The next prime is 189015347. The reversal of 189015345 is 543510981.

It can be written as a sum of positive squares in 2 ways, for example, as 94711824 + 94303521 = 9732^2 + 9711^2 .

It is not a de Polignac number, because 189015345 - 2⁵ = 189015313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (189015347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2100126 + ... + 2100215.

It is an arithmetic number, because the mean of its divisors is an integer number (27302223).

Almost surely, 2^189015345 is an apocalyptic number.

189015345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

189015345 is a deficient number, since it is larger than the sum of its proper divisors (138611331).

189015345 is a wasteful number, since it uses less digits than its factorization.

189015345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4200352 (or 4200349 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 36.

The square root of 189015345 is about 13748.2851657943. The cubic root of 189015345 is about 573.8948855908.

The spelling of 189015345 in words is "one hundred eighty-nine million, fifteen thousand, three hundred forty-five".