189442901 has 4 divisors (see below), whose sum is σ = 199413600. Its totient is φ = 179472204.

The previous prime is 189442873. The next prime is 189442909. The reversal of 189442901 is 109244981.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 189442901 - 2¹⁰ = 189441877 is a prime.

It is a super-2 number, since 2×189442901² = 71777225478591602, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189442909) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4985321 + ... + 4985358.

It is an arithmetic number, because the mean of its divisors is an integer number (49853400).

Almost surely, 2^189442901 is an apocalyptic number.

It is an amenable number.

189442901 is a deficient number, since it is larger than the sum of its proper divisors (9970699).

189442901 is an equidigital number, since it uses as much as digits as its factorization.

189442901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9970698.

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 189442901 is about 13763.8258126147. The cubic root of 189442901 is about 574.3272797998.

The spelling of 189442901 in words is "one hundred eighty-nine million, four hundred forty-two thousand, nine hundred one".