1081883618 has 4 divisors (see below), whose sum is σ = 1622825430. Its totient is φ = 540941808.

The previous prime is 1081883603. The next prime is 1081883623. The reversal of 1081883618 is 8163881801.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8163881801 = 89 ⋅91729009.

It can be written as a sum of positive squares in only one way, i.e., 1007872009 + 74011609 = 31747^2 + 8603^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 270470903 + ... + 270470906.

Almost surely, 2^1081883618 is an apocalyptic number.

1081883618 is a deficient number, since it is larger than the sum of its proper divisors (540941812).

1081883618 is an equidigital number, since it uses as much as digits as its factorization.

1081883618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540941811.

The product of its (nonzero) digits is 73728, while the sum is 44.

The square root of 1081883618 is about 32891.9993007418. Note that the first 3 decimals coincide. The cubic root of 1081883618 is about 1026.5816922184.

The spelling of 1081883618 in words is "one billion, eighty-one million, eight hundred eighty-three thousand, six hundred eighteen".