195738372287 has 4 divisors (see below), whose sum is σ = 195751935456. Its totient is φ = 195724809120.

The previous prime is 195738372257. The next prime is 195738372307. The reversal of 195738372287 is 782273837591.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 195738372287 - 2⁶ = 195738372223 is a prime.

It is a super-2 number, since 2×195738372287² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195738372227) 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, 6759914 + ... + 6788807.

It is an arithmetic number, because the mean of its divisors is an integer number (48937983864).

Almost surely, 2^195738372287 is an apocalyptic number.

195738372287 is a deficient number, since it is larger than the sum of its proper divisors (13563169).

195738372287 is a wasteful number, since it uses less digits than its factorization.

195738372287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13563168.

The product of its digits is 35562240, while the sum is 62.

The spelling of 195738372287 in words is "one hundred ninety-five billion, seven hundred thirty-eight million, three hundred seventy-two thousand, two hundred eighty-seven".