1314368581 has 4 divisors (see below), whose sum is σ = 1315173132. Its totient is φ = 1313564032.

The previous prime is 1314368579. The next prime is 1314368609. The reversal of 1314368581 is 1858634131.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 248346081 + 1066022500 = 15759^2 + 32650^2 .

It is a cyclic number.

It is not a de Polignac number, because 1314368581 - 2¹ = 1314368579 is a prime.

It is a super-2 number, since 2×1314368581² = 3455129533439907122, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1314368521) 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, 399820 + ... + 403093.

It is an arithmetic number, because the mean of its divisors is an integer number (328793283).

Almost surely, 2^1314368581 is an apocalyptic number.

It is an amenable number.

1314368581 is a deficient number, since it is larger than the sum of its proper divisors (804551).

1314368581 is an equidigital number, since it uses as much as digits as its factorization.

1314368581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 804550.

The product of its digits is 69120, while the sum is 40.

The square root of 1314368581 is about 36254.2215610817. The cubic root of 1314368581 is about 1095.3991250206.

The spelling of 1314368581 in words is "one billion, three hundred fourteen million, three hundred sixty-eight thousand, five hundred eighty-one".