1380191364 has 54 divisors (see below), whose sum is σ = 3577609854. Its totient is φ = 448378560.

The previous prime is 1380191333. The next prime is 1380191389. The reversal of 1380191364 is 4631910831.

It can be written as a sum of positive squares in only one way, i.e., 841580100 + 538611264 = 29010^2 + 23208^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1426809 + ... + 1427775.

Almost surely, 2^1380191364 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1380191364, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1788804927).

1380191364 is an abundant number, since it is smaller than the sum of its proper divisors (2197418490).

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

1380191364 is an equidigital number, since it uses as much as digits as its factorization.

1380191364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1985 (or 1013 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 1380191364 is about 37150.9268255854. The cubic root of 1380191364 is about 1113.3877410951.

The spelling of 1380191364 in words is "one billion, three hundred eighty million, one hundred ninety-one thousand, three hundred sixty-four".