189395328406 has 4 divisors (see below), whose sum is σ = 284092992612. Its totient is φ = 94697664202.

The previous prime is 189395328391. The next prime is 189395328503. The reversal of 189395328406 is 604823593981.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 47348832100 + ... + 47348832103.

It is an arithmetic number, because the mean of its divisors is an integer number (71023248153).

Almost surely, 2^189395328406 is an apocalyptic number.

189395328406 is a deficient number, since it is larger than the sum of its proper divisors (94697664206).

189395328406 is an equidigital number, since it uses as much as digits as its factorization.

189395328406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94697664205.

The product of its (nonzero) digits is 11197440, while the sum is 58.

The spelling of 189395328406 in words is "one hundred eighty-nine billion, three hundred ninety-five million, three hundred twenty-eight thousand, four hundred six".