20189151 has 24 divisors (see below), whose sum is σ = 29961360. Its totient is φ = 13095936.

The previous prime is 20189137. The next prime is 20189167. The reversal of 20189151 is 15198102.

20189151 is nontrivially palindromic in base 7.

It is not a de Polignac number, because 20189151 - 2⁵ = 20189119 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20189111) 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, 102385 + ... + 102581.

It is an arithmetic number, because the mean of its divisors is an integer number (1248390).

Almost surely, 2^20189151 is an apocalyptic number.

20189151 is a deficient number, since it is larger than the sum of its proper divisors (9772209).

20189151 is a wasteful number, since it uses less digits than its factorization.

20189151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455 (or 452 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 27.

The square root of 20189151 is about 4493.2339133413. The cubic root of 20189151 is about 272.2948027363.

The spelling of 20189151 in words is "twenty million, one hundred eighty-nine thousand, one hundred fifty-one".