1111893644 has 12 divisors (see below), whose sum is σ = 1960017864. Its totient is φ = 551888544.

The previous prime is 1111893593. The next prime is 1111893649. The reversal of 1111893644 is 4463981111.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1111893598 and 1111893607.

It is not an unprimeable number, because it can be changed into a prime (1111893649) by changing a digit.

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, 1013954 + ... + 1015049.

It is an arithmetic number, because the mean of its divisors is an integer number (163334822).

Almost surely, 2^1111893644 is an apocalyptic number.

It is an amenable number.

1111893644 is a deficient number, since it is larger than the sum of its proper divisors (848124220).

1111893644 is a wasteful number, since it uses less digits than its factorization.

1111893644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2029144 (or 2029142 counting only the distinct ones).

The product of its digits is 20736, while the sum is 38.

The square root of 1111893644 is about 33345.0692606868. The cubic root of 1111893644 is about 1035.9872627544.

The spelling of 1111893644 in words is "one billion, one hundred eleven million, eight hundred ninety-three thousand, six hundred forty-four".