189812318 has 32 divisors (see below), whose sum is σ = 311040000. Its totient is φ = 86542560.

The previous prime is 189812317. The next prime is 189812321. The reversal of 189812318 is 813218981.

189812318 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189812317) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 316583 + ... + 317181.

It is an arithmetic number, because the mean of its divisors is an integer number (9720000).

Almost surely, 2^189812318 is an apocalyptic number.

189812318 is a deficient number, since it is larger than the sum of its proper divisors (121227682).

189812318 is a wasteful number, since it uses less digits than its factorization.

189812318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 920.

The product of its digits is 27648, while the sum is 41.

The square root of 189812318 is about 13777.2391283595. The cubic root of 189812318 is about 574.7003535149.

The spelling of 189812318 in words is "one hundred eighty-nine million, eight hundred twelve thousand, three hundred eighteen".