189688401 has 24 divisors (see below), whose sum is σ = 317108480. Its totient is φ = 107018496.

The previous prime is 189688399. The next prime is 189688409. The reversal of 189688401 is 104886981.

189688401 is a `hidden beast` number, since 189 + 68 + 8 + 401 = 666.

189688401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 189688401 - 2¹ = 189688399 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189688409) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14080 + ... + 24033.

Almost surely, 2^189688401 is an apocalyptic number.

It is an amenable number.

189688401 is a deficient number, since it is larger than the sum of its proper divisors (127420079).

189688401 is a wasteful number, since it uses less digits than its factorization.

189688401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38205 (or 38202 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 45.

The square root of 189688401 is about 13772.7412304160. The cubic root of 189688401 is about 574.5752639046.

The spelling of 189688401 in words is "one hundred eighty-nine million, six hundred eighty-eight thousand, four hundred one".