1383397760 has 64 divisors (see below), whose sum is σ = 3314310480. Its totient is φ = 552167424.

The previous prime is 1383397753. The next prime is 1383397777. The reversal of 1383397760 is 677933831.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 332654 + ... + 336786.

Almost surely, 2^1383397760 is an apocalyptic number.

1383397760 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 1383397760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1657155240).

1383397760 is an abundant number, since it is smaller than the sum of its proper divisors (1930912720).

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

1383397760 is an equidigital number, since it uses as much as digits as its factorization.

1383397760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4675 (or 4663 counting only the distinct ones).

The product of its (nonzero) digits is 571536, while the sum is 47.

The square root of 1383397760 is about 37194.0554390080. The cubic root of 1383397760 is about 1114.2492643911.

The spelling of 1383397760 in words is "one billion, three hundred eighty-three million, three hundred ninety-seven thousand, seven hundred sixty".