20195195 has 16 divisors (see below), whose sum is σ = 26058240. Its totient is φ = 14976864.

The previous prime is 20195179. The next prime is 20195221. The reversal of 20195195 is 59159102.

It is not a de Polignac number, because 20195195 - 2⁴ = 20195179 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2204 + ... + 6726.

It is an arithmetic number, because the mean of its divisors is an integer number (1628640).

Almost surely, 2^20195195 is an apocalyptic number.

20195195 is a deficient number, since it is larger than the sum of its proper divisors (5863045).

20195195 is a wasteful number, since it uses less digits than its factorization.

20195195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4594.

The product of its (nonzero) digits is 4050, while the sum is 32.

The square root of 20195195 is about 4493.9064298225. The cubic root of 20195195 is about 272.3219722061.

The spelling of 20195195 in words is "twenty million, one hundred ninety-five thousand, one hundred ninety-five".