1361616635 has 4 divisors (see below), whose sum is σ = 1633939968. Its totient is φ = 1089293304.

The previous prime is 1361616611. The next prime is 1361616661. The reversal of 1361616635 is 5366161631.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1361616635 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 136161659 + ... + 136161668.

It is an arithmetic number, because the mean of its divisors is an integer number (408484992).

Almost surely, 2^1361616635 is an apocalyptic number.

1361616635 is a deficient number, since it is larger than the sum of its proper divisors (272323333).

1361616635 is an equidigital number, since it uses as much as digits as its factorization.

1361616635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272323332.

The product of its digits is 58320, while the sum is 38.

The square root of 1361616635 is about 36900.0899050395. The cubic root of 1361616635 is about 1108.3704777848.

The spelling of 1361616635 in words is "one billion, three hundred sixty-one million, six hundred sixteen thousand, six hundred thirty-five".