1313545663 has 8 divisors (see below), whose sum is σ = 1375341408. Its totient is φ = 1252140384.

The previous prime is 1313545661. The next prime is 1313545679. The reversal of 1313545663 is 3665453131.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1313545663 - 2¹ = 1313545661 is a prime.

It is a super-2 number, since 2×1313545663² = 3450804417572219138, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313545661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90720 + ... + 104197.

It is an arithmetic number, because the mean of its divisors is an integer number (171917676).

Almost surely, 2^1313545663 is an apocalyptic number.

1313545663 is a deficient number, since it is larger than the sum of its proper divisors (61795745).

1313545663 is a wasteful number, since it uses less digits than its factorization.

1313545663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195233.

The product of its digits is 97200, while the sum is 37.

The square root of 1313545663 is about 36242.8705126953. The cubic root of 1313545663 is about 1095.1704697659.

Adding to 1313545663 its reverse (3665453131), we get a palindrome (4978998794).

The spelling of 1313545663 in words is "one billion, three hundred thirteen million, five hundred forty-five thousand, six hundred sixty-three".