189218115 has 24 divisors (see below), whose sum is σ = 328515408. Its totient is φ = 100751040.

The previous prime is 189218101. The next prime is 189218119. The reversal of 189218115 is 511812981.

It is not a de Polignac number, because 189218115 - 2⁸ = 189217859 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 189218115.

It is not an unprimeable number, because it can be changed into a prime (189218119) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27360 + ... + 33570.

It is an arithmetic number, because the mean of its divisors is an integer number (13688142).

Almost surely, 2^189218115 is an apocalyptic number.

189218115 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

189218115 is a deficient number, since it is larger than the sum of its proper divisors (139297293).

189218115 is a wasteful number, since it uses less digits than its factorization.

189218115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6899 (or 6896 counting only the distinct ones).

The product of its digits is 5760, while the sum is 36.

The square root of 189218115 is about 13755.6575633446. The cubic root of 189218115 is about 574.1000313308.

The spelling of 189218115 in words is "one hundred eighty-nine million, two hundred eighteen thousand, one hundred fifteen".