1195887313657 has 4 divisors (see below), whose sum is σ = 1201555026256. Its totient is φ = 1190219601060.

The previous prime is 1195887313651. The next prime is 1195887313669. The reversal of 1195887313657 is 7563137885911.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1195887313657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1195887313651) 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, 2833855983 + ... + 2833856404.

It is an arithmetic number, because the mean of its divisors is an integer number (300388756564).

Almost surely, 2^{1195887313657} is an apocalyptic number.

It is an amenable number.

1195887313657 is a deficient number, since it is larger than the sum of its proper divisors (5667712599).

1195887313657 is an equidigital number, since it uses as much as digits as its factorization.

1195887313657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5667712598.

The product of its digits is 38102400, while the sum is 64.

The spelling of 1195887313657 in words is "one trillion, one hundred ninety-five billion, eight hundred eighty-seven million, three hundred thirteen thousand, six hundred fifty-seven".