1111801426 has 4 divisors (see below), whose sum is σ = 1667702142. Its totient is φ = 555900712.

The previous prime is 1111801423. The next prime is 1111801459. The reversal of 1111801426 is 6241081111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6241081111 = 751 ⋅8310361.

It can be written as a sum of positive squares in only one way, i.e., 1090650625 + 21150801 = 33025^2 + 4599^2 .

It is a super-2 number, since 2×1111801426² = 2472204821711266952, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1111801426.

It is not an unprimeable number, because it can be changed into a prime (1111801423) by changing a digit.

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, 277950355 + ... + 277950358.

Almost surely, 2^1111801426 is an apocalyptic number.

1111801426 is a deficient number, since it is larger than the sum of its proper divisors (555900716).

1111801426 is an equidigital number, since it uses as much as digits as its factorization.

1111801426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 555900715.

The product of its (nonzero) digits is 384, while the sum is 25.

The square root of 1111801426 is about 33343.6864488616. The cubic root of 1111801426 is about 1035.9586211317.

Adding to 1111801426 its reverse (6241081111), we get a palindrome (7352882537).

The spelling of 1111801426 in words is "one billion, one hundred eleven million, eight hundred one thousand, four hundred twenty-six".