1111783945 has 4 divisors (see below), whose sum is σ = 1334140740. Its totient is φ = 889427152.

The previous prime is 1111783909. The next prime is 1111783961. The reversal of 1111783945 is 5493871111.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 749719161 + 362064784 = 27381^2 + 19028^2 .

It is a cyclic number.

It is not a de Polignac number, because 1111783945 - 2¹⁷ = 1111652873 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1111783898 and 1111783907.

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 3 ways as a sum of consecutive naturals, for example, 111178390 + ... + 111178399.

It is an arithmetic number, because the mean of its divisors is an integer number (333535185).

Almost surely, 2^1111783945 is an apocalyptic number.

It is an amenable number.

1111783945 is a deficient number, since it is larger than the sum of its proper divisors (222356795).

1111783945 is an equidigital number, since it uses as much as digits as its factorization.

1111783945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222356794.

The product of its digits is 30240, while the sum is 40.

The square root of 1111783945 is about 33343.4243142482. The cubic root of 1111783945 is about 1035.9531915987.

The spelling of 1111783945 in words is "one billion, one hundred eleven million, seven hundred eighty-three thousand, nine hundred forty-five".