195018125190 has 64 divisors (see below), whose sum is σ = 535001379840. Its totient is φ = 44567694720.

The previous prime is 195018125119. The next prime is 195018125209. The reversal of 195018125190 is 91521810591.

It is a super-2 number, since 2×195018125190² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1153375 + ... + 1311605.

It is an arithmetic number, because the mean of its divisors is an integer number (8359396560).

Almost surely, 2^195018125190 is an apocalyptic number.

195018125190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

195018125190 is an abundant number, since it is smaller than the sum of its proper divisors (339983254650).

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

195018125190 is a wasteful number, since it uses less digits than its factorization.

195018125190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164117.

The product of its (nonzero) digits is 32400, while the sum is 42.

The spelling of 195018125190 in words is "one hundred ninety-five billion, eighteen million, one hundred twenty-five thousand, one hundred ninety".