1313369661 has 16 divisors (see below), whose sum is σ = 1906891200. Its totient is φ = 800892288.

The previous prime is 1313369657. The next prime is 1313369689. The reversal of 1313369661 is 1669633131.

It is a happy number.

1313369661 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1313369661 - 2² = 1313369657 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313369641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 395616 + ... + 398921.

It is an arithmetic number, because the mean of its divisors is an integer number (119180700).

Almost surely, 2^1313369661 is an apocalyptic number.

It is an amenable number.

1313369661 is a deficient number, since it is larger than the sum of its proper divisors (593521539).

1313369661 is a wasteful number, since it uses less digits than its factorization.

1313369661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 794588.

The product of its digits is 52488, while the sum is 39.

The square root of 1313369661 is about 36240.4423400157. The cubic root of 1313369661 is about 1095.1215536127.

The spelling of 1313369661 in words is "one billion, three hundred thirteen million, three hundred sixty-nine thousand, six hundred sixty-one".