1313388819 has 12 divisors (see below), whose sum is σ = 1898590096. Its totient is φ = 874912752.

The previous prime is 1313388799. The next prime is 1313388823. The reversal of 1313388819 is 9188833131.

It is not a de Polignac number, because 1313388819 - 2⁵ = 1313388787 is a prime.

It is a super-2 number, since 2×1313388819² = 3449980379748429522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1313388019) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44272 + ... + 67725.

Almost surely, 2^1313388819 is an apocalyptic number.

1313388819 is a deficient number, since it is larger than the sum of its proper divisors (585201277).

1313388819 is a wasteful number, since it uses less digits than its factorization.

1313388819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113306 (or 113303 counting only the distinct ones).

The product of its digits is 124416, while the sum is 45.

The square root of 1313388819 is about 36240.7066570176. The cubic root of 1313388819 is about 1095.1268783986.

The spelling of 1313388819 in words is "one billion, three hundred thirteen million, three hundred eighty-eight thousand, eight hundred nineteen".