189451401 has 16 divisors (see below), whose sum is σ = 258908160. Its totient is φ = 123186960.

The previous prime is 189451373. The next prime is 189451441. The reversal of 189451401 is 104154981.

It is not a de Polignac number, because 189451401 - 2¹¹ = 189449353 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (189451441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14856 + ... + 24486.

It is an arithmetic number, because the mean of its divisors is an integer number (16181760).

Almost surely, 2^189451401 is an apocalyptic number.

It is an amenable number.

189451401 is a deficient number, since it is larger than the sum of its proper divisors (69456759).

189451401 is an equidigital number, since it uses as much as digits as its factorization.

189451401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9796.

The product of its (nonzero) digits is 5760, while the sum is 33.

The square root of 189451401 is about 13764.1345895774. The cubic root of 189451401 is about 574.3358693869.

The spelling of 189451401 in words is "one hundred eighty-nine million, four hundred fifty-one thousand, four hundred one".