204189151 has 4 divisors (see below), whose sum is σ = 204507352. Its totient is φ = 203870952.

The previous prime is 204189127. The next prime is 204189169. The reversal of 204189151 is 151981402.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 204189151 - 2⁵ = 204189119 is a prime.

It is a super-2 number, since 2×204189151² = 83386418772201602, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204189191) 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, 158136 + ... + 159421.

It is an arithmetic number, because the mean of its divisors is an integer number (51126838).

Almost surely, 2^204189151 is an apocalyptic number.

204189151 is a deficient number, since it is larger than the sum of its proper divisors (318201).

204189151 is an equidigital number, since it uses as much as digits as its factorization.

204189151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318200.

The product of its (nonzero) digits is 2880, while the sum is 31.

The square root of 204189151 is about 14289.4769323443. The cubic root of 204189151 is about 588.8584178938.

The spelling of 204189151 in words is "two hundred four million, one hundred eighty-nine thousand, one hundred fifty-one".