1081854618 has 96 divisors (see below), whose sum is σ = 2463917568. Its totient is φ = 314565120.

The previous prime is 1081854617. The next prime is 1081854643. The reversal of 1081854618 is 8164581801.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1081854618.

It is not an unprimeable number, because it can be changed into a prime (1081854617) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4851255 + ... + 4851477.

It is an arithmetic number, because the mean of its divisors is an integer number (25665808).

Almost surely, 2^1081854618 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1081854618, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1231958784).

1081854618 is an abundant number, since it is smaller than the sum of its proper divisors (1382062950).

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

1081854618 is a wasteful number, since it uses less digits than its factorization.

1081854618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360 (or 319 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 42.

The square root of 1081854618 is about 32891.5584611006. The cubic root of 1081854618 is about 1026.5725195944.

The spelling of 1081854618 in words is "one billion, eighty-one million, eight hundred fifty-four thousand, six hundred eighteen".