1111431644 has 48 divisors (see below), whose sum is σ = 2114411040. Its totient is φ = 509245440.

The previous prime is 1111431617. The next prime is 1111431647. The reversal of 1111431644 is 4461341111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111431647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 404114 + ... + 406854.

It is an arithmetic number, because the mean of its divisors is an integer number (44050230).

Almost surely, 2^1111431644 is an apocalyptic number.

It is an amenable number.

1111431644 is a deficient number, since it is larger than the sum of its proper divisors (1002979396).

1111431644 is a wasteful number, since it uses less digits than its factorization.

1111431644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2918 (or 2916 counting only the distinct ones).

The product of its digits is 1152, while the sum is 26.

The square root of 1111431644 is about 33338.1409799647. The cubic root of 1111431644 is about 1035.8437560967.

Adding to 1111431644 its reverse (4461341111), we get a palindrome (5572772755).

The spelling of 1111431644 in words is "one billion, one hundred eleven million, four hundred thirty-one thousand, six hundred forty-four".