1313341989 has 4 divisors (see below), whose sum is σ = 1751122656. Its totient is φ = 875561324.

The previous prime is 1313341943. The next prime is 1313342003. The reversal of 1313341989 is 9891433131.

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-1313341989 is a prime.

It is a super-2 number, since 2×1313341989² = 3449734360140952242, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1313341989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313341789) 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, 218890329 + ... + 218890334.

It is an arithmetic number, because the mean of its divisors is an integer number (437780664).

Almost surely, 2^1313341989 is an apocalyptic number.

It is an amenable number.

1313341989 is a deficient number, since it is larger than the sum of its proper divisors (437780667).

1313341989 is an equidigital number, since it uses as much as digits as its factorization.

1313341989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437780666.

The product of its digits is 69984, while the sum is 42.

The square root of 1313341989 is about 36240.0605545852. The cubic root of 1313341989 is about 1095.1138623492.

The spelling of 1313341989 in words is "one billion, three hundred thirteen million, three hundred forty-one thousand, nine hundred eighty-nine".