1344997680 has 160 divisors (see below), whose sum is σ = 4685700096. Its totient is φ = 316664832.

The previous prime is 1344997649. The next prime is 1344997697. The reversal of 1344997680 is 867994431.

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, 62389 + ... + 81131.

Almost surely, 2^1344997680 is an apocalyptic number.

1344997680 is a gapful number since it is divisible by the number (10) 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 1344997680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2342850048).

1344997680 is an abundant number, since it is smaller than the sum of its proper divisors (3340702416).

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

1344997680 is a wasteful number, since it uses less digits than its factorization.

1344997680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18795 (or 18789 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 51.

The square root of 1344997680 is about 36674.2100119416. The cubic root of 1344997680 is about 1103.8426708171.

The spelling of 1344997680 in words is "one billion, three hundred forty-four million, nine hundred ninety-seven thousand, six hundred eighty".