1081005456 has 40 divisors (see below), whose sum is σ = 2939578720. Its totient is φ = 341369856.

The previous prime is 1081005439. The next prime is 1081005511. The reversal of 1081005456 is 6545001801.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 591745 + ... + 593568.

It is an arithmetic number, because the mean of its divisors is an integer number (73489468).

Almost surely, 2^1081005456 is an apocalyptic number.

1081005456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1081005456 is an abundant number, since it is smaller than the sum of its proper divisors (1858573264).

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

1081005456 is a wasteful number, since it uses less digits than its factorization.

1081005456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1185343 (or 1185337 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 30.

The square root of 1081005456 is about 32878.6474174349. The cubic root of 1081005456 is about 1026.3038591738.

The spelling of 1081005456 in words is "one billion, eighty-one million, five thousand, four hundred fifty-six".