189189495 has 48 divisors (see below), whose sum is σ = 359517600. Its totient is φ = 91272960.

The previous prime is 189189491. The next prime is 189189503. The reversal of 189189495 is 594981981.

It is not a de Polignac number, because 189189495 - 2² = 189189491 is a prime.

Its product of digits (933120) is a multiple of the sum of its prime factors (1920).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189189491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 112521 + ... + 114189.

It is an arithmetic number, because the mean of its divisors is an integer number (7489950).

Almost surely, 2^189189495 is an apocalyptic number.

189189495 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

189189495 is a deficient number, since it is larger than the sum of its proper divisors (170328105).

189189495 is a wasteful number, since it uses less digits than its factorization.

189189495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1920 (or 1917 counting only the distinct ones).

The product of its digits is 933120, while the sum is 54.

The square root of 189189495 is about 13754.6172247722. The cubic root of 189189495 is about 574.0710848926.

The spelling of 189189495 in words is "one hundred eighty-nine million, one hundred eighty-nine thousand, four hundred ninety-five".