195149190999 has 24 divisors (see below), whose sum is σ = 304201430400. Its totient is φ = 110953435824.

The previous prime is 195149190991. The next prime is 195149191049. The reversal of 195149190999 is 999091941591.

It is not a de Polignac number, because 195149190999 - 2³ = 195149190991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195149190991) 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, 3306289 + ... + 3364794.

It is an arithmetic number, because the mean of its divisors is an integer number (12675059600).

Almost surely, 2^195149190999 is an apocalyptic number.

195149190999 is a deficient number, since it is larger than the sum of its proper divisors (109052239401).

195149190999 is a wasteful number, since it uses less digits than its factorization.

195149190999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6671299 (or 6671292 counting only the distinct ones).

The product of its (nonzero) digits is 10628820, while the sum is 66.

The spelling of 195149190999 in words is "one hundred ninety-five billion, one hundred forty-nine million, one hundred ninety thousand, nine hundred ninety-nine".