195236691016 has 16 divisors (see below), whose sum is σ = 366085962540. Its totient is φ = 97613767680.

The previous prime is 195236691007. The next prime is 195236691017. The reversal of 195236691016 is 610196632591.

It can be written as a sum of positive squares in 2 ways, for example, as 171073232100 + 24163458916 = 413610^2 + 155446^2 .

It is a super-2 number, since 2×195236691016² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (195236691017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 387465 + ... + 735256.

Almost surely, 2^195236691016 is an apocalyptic number.

It is an amenable number.

195236691016 is a deficient number, since it is larger than the sum of its proper divisors (170849271524).

195236691016 is a wasteful number, since it uses less digits than its factorization.

195236691016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1144464 (or 1144460 counting only the distinct ones).

The product of its (nonzero) digits is 524880, while the sum is 49.

The spelling of 195236691016 in words is "one hundred ninety-five billion, two hundred thirty-six million, six hundred ninety-one thousand, sixteen".