189418394 has 8 divisors (see below), whose sum is σ = 309957408. Its totient is φ = 86099260.

The previous prime is 189418387. The next prime is 189418421. The reversal of 189418394 is 493814981.

189418394 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4304942 + ... + 4304985.

It is an arithmetic number, because the mean of its divisors is an integer number (38744676).

Almost surely, 2^189418394 is an apocalyptic number.

189418394 is a deficient number, since it is larger than the sum of its proper divisors (120539014).

189418394 is a wasteful number, since it uses less digits than its factorization.

189418394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8609940.

The product of its digits is 248832, while the sum is 47.

The square root of 189418394 is about 13762.9355153615. The cubic root of 189418394 is about 574.3025130661.

The spelling of 189418394 in words is "one hundred eighty-nine million, four hundred eighteen thousand, three hundred ninety-four".