195316249362481 has 81 divisors (see below), whose sum is σ = 226561254971499. Its totient is φ = 168287644036512.

The previous prime is 195316249362461. The next prime is 195316249362503. The reversal of 195316249362481 is 184263942613591.

The square root of 195316249362481 is 13975559.

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

It can be written as a sum of positive squares in only one way, i.e., 28892936296225 + 166423313066256 = 5375215^2 + 12900516^2 .

It is a de Polignac number, because none of the positive numbers 2^k-195316249362481 is a prime.

It is a super-2 number, since 2×195316249362481² (a number of 29 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (64) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (195316249362461) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 179683761520 + ... + 179683762606.

Almost surely, 2^{195316249362481} is an apocalyptic number.

195316249362481 is the 13975559-th square number.

195316249362481 is the 6987780-th centered octagonal number.

It is an amenable number.

195316249362481 is a deficient number, since it is larger than the sum of its proper divisors (31245005609018).

195316249362481 is an frugal number, since it uses more digits than its factorization.

195316249362481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2332 (or 1166 counting only the distinct ones).

The product of its digits is 67184640, while the sum is 64.

The spelling of 195316249362481 in words is "one hundred ninety-five trillion, three hundred sixteen billion, two hundred forty-nine million, three hundred sixty-two thousand, four hundred eighty-one".