15195246361 has 3 divisors (see below), whose sum is σ = 15195369631. Its totient is φ = 15195123092.

The previous prime is 15195246349. The next prime is 15195246379. The reversal of 15195246361 is 16364259151.

The square root of 15195246361 is 123269.

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

15195246361 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 11071037961 + 4124208400 = 105219^2 + 64220^2 .

It is not a de Polignac number, because 15195246361 - 2²³ = 15186857753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15195249361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 61635 + ... + 184903.

Almost surely, 2^15195246361 is an apocalyptic number.

15195246361 is the 123269-th square number.

15195246361 is the 61635-th centered octagonal number.

It is an amenable number.

15195246361 is a deficient number, since it is larger than the sum of its proper divisors (123270).

15195246361 is an frugal number, since it uses more digits than its factorization.

15195246361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246538 (or 123269 counting only the distinct ones).

The product of its digits is 194400, while the sum is 43.

The spelling of 15195246361 in words is "fifteen billion, one hundred ninety-five million, two hundred forty-six thousand, three hundred sixty-one".