189005450 has 48 divisors (see below), whose sum is σ = 369024000. Its totient is φ = 71928000.

The previous prime is 189005429. The next prime is 189005461. The reversal of 189005450 is 54500981.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 93551 + ... + 95549.

It is an arithmetic number, because the mean of its divisors is an integer number (7688000).

Almost surely, 2^189005450 is an apocalyptic number.

189005450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

189005450 is a deficient number, since it is larger than the sum of its proper divisors (180018550).

189005450 is a wasteful number, since it uses less digits than its factorization.

189005450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2103 (or 2098 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 32.

The square root of 189005450 is about 13747.9252980222. The cubic root of 189005450 is about 573.8848709030.

The spelling of 189005450 in words is "one hundred eighty-nine million, five thousand, four hundred fifty".