20195031894 has 8 divisors (see below), whose sum is σ = 40390063800. Its totient is φ = 6731677296.

The previous prime is 20195031887. The next prime is 20195031931. The reversal of 20195031894 is 49813059102.

20195031894 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

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

20195031894 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1682919319 + ... + 1682919330.

It is an arithmetic number, because the mean of its divisors is an integer number (5048757975).

Almost surely, 2^20195031894 is an apocalyptic number.

20195031894 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20195031894 is a wasteful number, since it uses less digits than its factorization.

20195031894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3365838654.

The product of its (nonzero) digits is 77760, while the sum is 42.

The spelling of 20195031894 in words is "twenty billion, one hundred ninety-five million, thirty-one thousand, eight hundred ninety-four".