195990426 has 12 divisors (see below), whose sum is σ = 424645962. Its totient is φ = 65330136.

The previous prime is 195990413. The next prime is 195990427. The reversal of 195990426 is 624099591.

195990426 is a `hidden beast` number, since 19 + 599 + 0 + 42 + 6 = 666.

195990426 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 171636201 + 24354225 = 13101^2 + 4935^2 .

It is a super-2 number, since 2×195990426² = 76824494167322952, which contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (195990427) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5444161 + ... + 5444196.

Almost surely, 2^195990426 is an apocalyptic number.

195990426 is an abundant number, since it is smaller than the sum of its proper divisors (228655536).

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

195990426 is a wasteful number, since it uses less digits than its factorization.

195990426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10888365 (or 10888362 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 45.

The square root of 195990426 is about 13999.6580672529. The cubic root of 195990426 is about 580.8691151557.

The spelling of 195990426 in words is "one hundred ninety-five million, nine hundred ninety thousand, four hundred twenty-six".