195953187556 has 45 divisors (see below), whose sum is σ = 400135871849. Its totient is φ = 83961345552.

The previous prime is 195953187541. The next prime is 195953187571. The reversal of 195953187556 is 655781359591.

The square root of 195953187556 is 442666.

It is a perfect power (a square), and thus also a powerful number.

It is an interprime number because it is at equal distance from previous prime (195953187541) and next prime (195953187571).

It can be written as a sum of positive squares in only one way, i.e., 780084900 + 195173102656 = 27930^2 + 441784^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 43379010 + ... + 43383526.

Almost surely, 2^195953187556 is an apocalyptic number.

195953187556 is the 442666-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 195953187556

195953187556 is an abundant number, since it is smaller than the sum of its proper divisors (204182684293).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

195953187556 is an frugal number, since it uses more digits than its factorization.

195953187556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9066 (or 4526 counting only the distinct ones).

The product of its digits is 51030000, while the sum is 64.

Multiplying 195953187556 by its sum of digits (64), we get a square (12541004003584 = 3541328²).

The spelling of 195953187556 in words is "one hundred ninety-five billion, nine hundred fifty-three million, one hundred eighty-seven thousand, five hundred fifty-six".