1313969472 has 224 divisors, whose sum is σ = 4200550400. Its totient is φ = 401241600.

The previous prime is 1313969407. The next prime is 1313969473. The reversal of 1313969472 is 2749693131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313969473) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1017147 + ... + 1018437.

Almost surely, 2^1313969472 is an apocalyptic number.

1313969472 is a gapful number since it is divisible by the number (12) 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 1313969472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2100275200).

1313969472 is an abundant number, since it is smaller than the sum of its proper divisors (2886580928).

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

1313969472 is a wasteful number, since it uses less digits than its factorization.

1313969472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1362 (or 1346 counting only the distinct ones).

The product of its digits is 244944, while the sum is 45.

The square root of 1313969472 is about 36248.7168324618. The cubic root of 1313969472 is about 1095.2882408760.

The spelling of 1313969472 in words is "one billion, three hundred thirteen million, nine hundred sixty-nine thousand, four hundred seventy-two".