1081904380 has 12 divisors (see below), whose sum is σ = 2271999240. Its totient is φ = 432761744.

The previous prime is 1081904377. The next prime is 1081904393. The reversal of 1081904380 is 834091801.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27047590 + ... + 27047629.

It is an arithmetic number, because the mean of its divisors is an integer number (189333270).

Almost surely, 2^1081904380 is an apocalyptic number.

1081904380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1081904380 is an abundant number, since it is smaller than the sum of its proper divisors (1190094860).

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

1081904380 is a wasteful number, since it uses less digits than its factorization.

1081904380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54095228 (or 54095226 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 1081904380 is about 32892.3149078930. The cubic root of 1081904380 is about 1026.5882590840.

The spelling of 1081904380 in words is "one billion, eighty-one million, nine hundred four thousand, three hundred eighty".