1380818880 has 672 divisors, whose sum is σ = 5988710400. Its totient is φ = 293289984.

The previous prime is 1380818861. The next prime is 1380818917. The reversal of 1380818880 is 888180831.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (672).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 17478681 + ... + 17478759.

Almost surely, 2^1380818880 is an apocalyptic number.

1380818880 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 1380818880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2994355200).

1380818880 is an abundant number, since it is smaller than the sum of its proper divisors (4607891520).

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

1380818880 is a wasteful number, since it uses less digits than its factorization.

1380818880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146 (or 113 counting only the distinct ones).

The product of its (nonzero) digits is 98304, while the sum is 45.

The square root of 1380818880 is about 37159.3713617440. The cubic root of 1380818880 is about 1113.5564526669.

The spelling of 1380818880 in words is "one billion, three hundred eighty million, eight hundred eighteen thousand, eight hundred eighty".