1319116440 has 64 divisors (see below), whose sum is σ = 3960136800. Its totient is φ = 351516672.

The previous prime is 1319116391. The next prime is 1319116441. The reversal of 1319116440 is 446119131.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 1319116398 and 1319116407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1319116441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 221826 + ... + 227694.

Almost surely, 2^1319116440 is an apocalyptic number.

1319116440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1319116440 is an abundant number, since it is smaller than the sum of its proper divisors (2641020360).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1319116440 is a wasteful number, since it uses less digits than its factorization.

1319116440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7756 (or 7752 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 1319116440 is about 36319.6426193871. The cubic root of 1319116440 is about 1096.7165005189.

The spelling of 1319116440 in words is "one billion, three hundred nineteen million, one hundred sixteen thousand, four hundred forty".