195992190 has 32 divisors (see below), whose sum is σ = 522646560. Its totient is φ = 52264512.

The previous prime is 195992143. The next prime is 195992191. The reversal of 195992190 is 91299591.

195992190 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×195992190² = 76825877081992200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195992191) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 362679 + ... + 363218.

It is an arithmetic number, because the mean of its divisors is an integer number (16332705).

Almost surely, 2^195992190 is an apocalyptic number.

195992190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

195992190 is an abundant number, since it is smaller than the sum of its proper divisors (326654370).

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

195992190 is a wasteful number, since it uses less digits than its factorization.

195992190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 725913 (or 725907 counting only the distinct ones).

The product of its (nonzero) digits is 65610, while the sum is 45.

The square root of 195992190 is about 13999.7210686499. The cubic root of 195992190 is about 580.8708578429.

It can be divided in two parts, 1959 and 92190, that added together give a palindrome (94149).

The spelling of 195992190 in words is "one hundred ninety-five million, nine hundred ninety-two thousand, one hundred ninety".