1361195361 has 32 divisors (see below), whose sum is σ = 2130320640. Its totient is φ = 867976560.

The previous prime is 1361195357. The next prime is 1361195369. The reversal of 1361195361 is 1635911631.

1361195361 is a `hidden beast` number, since 1 + 3 + 6 + 119 + 536 + 1 = 666.

It is not a de Polignac number, because 1361195361 - 2² = 1361195357 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1361195369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36771 + ... + 63831.

It is an arithmetic number, because the mean of its divisors is an integer number (66572520).

Almost surely, 2^1361195361 is an apocalyptic number.

It is an amenable number.

1361195361 is a deficient number, since it is larger than the sum of its proper divisors (769125279).

1361195361 is an frugal number, since it uses more digits than its factorization.

1361195361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27105 (or 27087 counting only the distinct ones).

The product of its digits is 14580, while the sum is 36.

The square root of 1361195361 is about 36894.3811575692. The cubic root of 1361195361 is about 1108.2561588163.

The spelling of 1361195361 in words is "one billion, three hundred sixty-one million, one hundred ninety-five thousand, three hundred sixty-one".