1383545280 has 224 divisors, whose sum is σ = 4813401600. Its totient is φ = 334614528.

The previous prime is 1383545227. The next prime is 1383545281. The reversal of 1383545280 is 825453831.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1383545281) 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, 735381 + ... + 737259.

It is an arithmetic number, because the mean of its divisors is an integer number (21488400).

Almost surely, 2^1383545280 is an apocalyptic number.

1383545280 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 1383545280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2406700800).

1383545280 is an abundant number, since it is smaller than the sum of its proper divisors (3429856320).

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

1383545280 is a wasteful number, since it uses less digits than its factorization.

1383545280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1971 (or 1961 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 39.

The square root of 1383545280 is about 37196.0384987434. The cubic root of 1383545280 is about 1114.2888693439.

The spelling of 1383545280 in words is "one billion, three hundred eighty-three million, five hundred forty-five thousand, two hundred eighty".