1081344380 has 24 divisors (see below), whose sum is σ = 2293310880. Its totient is φ = 428254400.

The previous prime is 1081344353. The next prime is 1081344409. The reversal of 1081344380 is 834431801.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 265640 + ... + 269679.

It is an arithmetic number, because the mean of its divisors is an integer number (95554620).

Almost surely, 2^1081344380 is an apocalyptic number.

1081344380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1081344380 is an abundant number, since it is smaller than the sum of its proper divisors (1211966500).

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

1081344380 is a wasteful number, since it uses less digits than its factorization.

1081344380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 535429 (or 535427 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 1081344380 is about 32883.8011793041. The cubic root of 1081344380 is about 1026.4111058306.

The spelling of 1081344380 in words is "one billion, eighty-one million, three hundred forty-four thousand, three hundred eighty".