20195219 has 8 divisors (see below), whose sum is σ = 22989312. Its totient is φ = 17560840.

The previous prime is 20195179. The next prime is 20195221. The reversal of 20195219 is 91259102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20195219 - 2²⁰ = 19146643 is a prime.

It is a super-2 number, since 2×20195219² = 815693740915922, which contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 7.

It is a junction number, because it is equal to n+sod(n) for n = 20195191 and 20195200.

It is not an unprimeable number, because it can be changed into a prime (20195249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39659 + ... + 40164.

It is an arithmetic number, because the mean of its divisors is an integer number (2873664).

Almost surely, 2^20195219 is an apocalyptic number.

20195219 is a deficient number, since it is larger than the sum of its proper divisors (2794093).

20195219 is a wasteful number, since it uses less digits than its factorization.

20195219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79857.

The product of its (nonzero) digits is 1620, while the sum is 29.

The square root of 20195219 is about 4493.9091001043. The cubic root of 20195219 is about 272.3220800820.

The spelling of 20195219 in words is "twenty million, one hundred ninety-five thousand, two hundred nineteen".