189638854 has 16 divisors (see below), whose sum is σ = 288842400. Its totient is φ = 93369024.

The previous prime is 189638851. The next prime is 189638857. The reversal of 189638854 is 458836981.

189638854 = 348² + 349² + ... + 848².

189638854 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (189638851) and next prime (189638857).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189638851) 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, 33802 + ... + 39010.

It is an arithmetic number, because the mean of its divisors is an integer number (18052650).

Almost surely, 2^189638854 is an apocalyptic number.

189638854 is a deficient number, since it is larger than the sum of its proper divisors (99203546).

189638854 is a wasteful number, since it uses less digits than its factorization.

189638854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5487.

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

The square root of 189638854 is about 13770.9423787917. The cubic root of 189638854 is about 574.5252328018.

The spelling of 189638854 in words is "one hundred eighty-nine million, six hundred thirty-eight thousand, eight hundred fifty-four".