1363900813 has 4 divisors (see below), whose sum is σ = 1487891808. Its totient is φ = 1239909820.

The previous prime is 1363900777. The next prime is 1363900819. The reversal of 1363900813 is 3180093631.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1363900813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1363900819) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61995481 + ... + 61995502.

It is an arithmetic number, because the mean of its divisors is an integer number (371972952).

Almost surely, 2^1363900813 is an apocalyptic number.

It is an amenable number.

1363900813 is a deficient number, since it is larger than the sum of its proper divisors (123990995).

1363900813 is a wasteful number, since it uses less digits than its factorization.

1363900813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123990994.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 1363900813 is about 36931.0277815281. The cubic root of 1363900813 is about 1108.9899132955.

The spelling of 1363900813 in words is "one billion, three hundred sixty-three million, nine hundred thousand, eight hundred thirteen".