195349626815 has 32 divisors (see below), whose sum is σ = 276689018880. Its totient is φ = 129567888000.

The previous prime is 195349626751. The next prime is 195349626817. The reversal of 195349626815 is 518626943591.

It is a happy number.

It is not a de Polignac number, because 195349626815 - 2⁶ = 195349626751 is a prime.

It is a super-2 number, since 2×195349626815² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195349626817) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2168165 + ... + 2256465.

It is an arithmetic number, because the mean of its divisors is an integer number (8646531840).

Almost surely, 2^195349626815 is an apocalyptic number.

195349626815 is a deficient number, since it is larger than the sum of its proper divisors (81339392065).

195349626815 is a wasteful number, since it uses less digits than its factorization.

195349626815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90383.

The product of its digits is 13996800, while the sum is 59.

The spelling of 195349626815 in words is "one hundred ninety-five billion, three hundred forty-nine million, six hundred twenty-six thousand, eight hundred fifteen".