189845494 has 8 divisors (see below), whose sum is σ = 301519368. Its totient is φ = 89339040.

The previous prime is 189845489. The next prime is 189845501. The reversal of 189845494 is 494548981.

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

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2791812 + ... + 2791879.

It is an arithmetic number, because the mean of its divisors is an integer number (37689921).

Almost surely, 2^189845494 is an apocalyptic number.

189845494 is a deficient number, since it is larger than the sum of its proper divisors (111673874).

189845494 is a wasteful number, since it uses less digits than its factorization.

189845494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5583710.

The product of its digits is 1658880, while the sum is 52.

The square root of 189845494 is about 13778.4430905672. The cubic root of 189845494 is about 574.7338342156.

The spelling of 189845494 in words is "one hundred eighty-nine million, eight hundred forty-five thousand, four hundred ninety-four".