1318969344 has 448 divisors, whose sum is σ = 4756050432. Its totient is φ = 314572800.

The previous prime is 1318969313. The next prime is 1318969357. The reversal of 1318969344 is 4439698131.

It is a tau number, because it is divible by the number of its divisors (448).

It is a Harshad number since it is a multiple of its sum of digits (48).

Its product of digits (559872) is a multiple of the sum of its prime divisors (81).

It is a junction number, because it is equal to n+sod(n) for n = 1318969293 and 1318969302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32169964 + ... + 32170004.

It is an arithmetic number, because the mean of its divisors is an integer number (10616184).

Almost surely, 2^1318969344 is an apocalyptic number.

1318969344 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1318969344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2378025216).

1318969344 is an abundant number, since it is smaller than the sum of its proper divisors (3437081088).

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

1318969344 is a wasteful number, since it uses less digits than its factorization.

1318969344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105 (or 81 counting only the distinct ones).

The product of its digits is 559872, while the sum is 48.

The square root of 1318969344 is about 36317.6175430052. The cubic root of 1318969344 is about 1096.6757336838.

The spelling of 1318969344 in words is "one billion, three hundred eighteen million, nine hundred sixty-nine thousand, three hundred forty-four".