1380091392 has 80 divisors (see below), whose sum is σ = 4085207280. Its totient is φ = 460025856.

The previous prime is 1380091357. The next prime is 1380091439. The reversal of 1380091392 is 2931900831.

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 7 ways as a sum of consecutive naturals, for example, 36093 + ... + 63740.

It is an arithmetic number, because the mean of its divisors is an integer number (51065091).

Almost surely, 2^1380091392 is an apocalyptic number.

1380091392 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1380091392 is an abundant number, since it is smaller than the sum of its proper divisors (2705115888).

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

1380091392 is an frugal number, since it uses more digits than its factorization.

1380091392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99860 (or 99838 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 1380091392 is about 37149.5813166178. The cubic root of 1380091392 is about 1113.3608582802.

The spelling of 1380091392 in words is "one billion, three hundred eighty million, ninety-one thousand, three hundred ninety-two".