199375025790 has 48 divisors (see below), whose sum is σ = 505009788048. Its totient is φ = 50368424832.

The previous prime is 199375025779. The next prime is 199375025791. The reversal of 199375025790 is 97520573991.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a self number, because there is not a number n which added to its sum of digits gives 199375025790.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199375025791) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9193927 + ... + 9215586.

It is an arithmetic number, because the mean of its divisors is an integer number (10521037251).

Almost surely, 2^199375025790 is an apocalyptic number.

199375025790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

199375025790 is an abundant number, since it is smaller than the sum of its proper divisors (305634762258).

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

199375025790 is a wasteful number, since it uses less digits than its factorization.

199375025790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18409561 (or 18409542 counting only the distinct ones).

The product of its (nonzero) digits is 5358150, while the sum is 57.

The spelling of 199375025790 in words is "one hundred ninety-nine billion, three hundred seventy-five million, twenty-five thousand, seven hundred ninety".