195263790 has 32 divisors (see below), whose sum is σ = 489010176. Its totient is φ = 49806240.

The previous prime is 195263773. The next prime is 195263791. The reversal of 195263790 is 97362591.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195263791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 140806 + ... + 142185.

It is an arithmetic number, because the mean of its divisors is an integer number (15281568).

Almost surely, 2^195263790 is an apocalyptic number.

195263790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

195263790 is an abundant number, since it is smaller than the sum of its proper divisors (293746386).

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

195263790 is a wasteful number, since it uses less digits than its factorization.

195263790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283024.

The product of its (nonzero) digits is 102060, while the sum is 42.

The square root of 195263790 is about 13973.6820487658. The cubic root of 195263790 is about 580.1503672757.

The spelling of 195263790 in words is "one hundred ninety-five million, two hundred sixty-three thousand, seven hundred ninety".