195023390 has 16 divisors (see below), whose sum is σ = 351572832. Its totient is φ = 77891424.

The previous prime is 195023377. The next prime is 195023401. The reversal of 195023390 is 93320591.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 7634 + ... + 21173.

It is an arithmetic number, because the mean of its divisors is an integer number (21973302).

Almost surely, 2^195023390 is an apocalyptic number.

195023390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

195023390 is a deficient number, since it is larger than the sum of its proper divisors (156549442).

195023390 is a wasteful number, since it uses less digits than its factorization.

195023390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29491.

The product of its (nonzero) digits is 7290, while the sum is 32.

The square root of 195023390 is about 13965.0775150015. The cubic root of 195023390 is about 579.9121844853.

The spelling of 195023390 in words is "one hundred ninety-five million, twenty-three thousand, three hundred ninety".