1361339803 has 4 divisors (see below), whose sum is σ = 1361750368. Its totient is φ = 1360929240.

The previous prime is 1361339789. The next prime is 1361339813. The reversal of 1361339803 is 3089331631.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3089331631 = 347 ⋅8902973.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1361339803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1361339813) 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, 200268 + ... + 206953.

It is an arithmetic number, because the mean of its divisors is an integer number (340437592).

Almost surely, 2^1361339803 is an apocalyptic number.

1361339803 is a deficient number, since it is larger than the sum of its proper divisors (410565).

1361339803 is an equidigital number, since it uses as much as digits as its factorization.

1361339803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410564.

The product of its (nonzero) digits is 34992, while the sum is 37.

The square root of 1361339803 is about 36896.3386123881. The cubic root of 1361339803 is about 1108.2953579592.

The spelling of 1361339803 in words is "one billion, three hundred sixty-one million, three hundred thirty-nine thousand, eight hundred three".