1081223966 has 4 divisors (see below), whose sum is σ = 1621835952. Its totient is φ = 540611982.

The previous prime is 1081223947. The next prime is 1081223993. The reversal of 1081223966 is 6693221801.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6693221801 = 7 ⋅956174543.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 270305990 + ... + 270305993.

It is an arithmetic number, because the mean of its divisors is an integer number (405458988).

Almost surely, 2^1081223966 is an apocalyptic number.

1081223966 is a deficient number, since it is larger than the sum of its proper divisors (540611986).

1081223966 is an equidigital number, since it uses as much as digits as its factorization.

1081223966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540611985.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 1081223966 is about 32881.9702268584. The cubic root of 1081223966 is about 1026.3730054631.

The spelling of 1081223966 in words is "one billion, eighty-one million, two hundred twenty-three thousand, nine hundred sixty-six".