189573478 has 16 divisors (see below), whose sum is σ = 286651296. Its totient is φ = 94026240.

The previous prime is 189573473. The next prime is 189573497. The reversal of 189573478 is 874375981.

189573478 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×189573478² = 71876207122032968, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189573473) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 254775 + ... + 255517.

It is an arithmetic number, because the mean of its divisors is an integer number (17915706).

Almost surely, 2^189573478 is an apocalyptic number.

189573478 is a deficient number, since it is larger than the sum of its proper divisors (97077818).

189573478 is a wasteful number, since it uses less digits than its factorization.

189573478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1599.

The product of its digits is 1693440, while the sum is 52.

The square root of 189573478 is about 13768.5684804195. The cubic root of 189573478 is about 574.4592047036.

The spelling of 189573478 in words is "one hundred eighty-nine million, five hundred seventy-three thousand, four hundred seventy-eight".