1115943444 has 324 divisors, whose sum is σ = 3821781600. Its totient is φ = 271434240.

The previous prime is 1115943443. The next prime is 1115943457. The reversal of 1115943444 is 4443495111.

It is a super-2 number, since 2×1115943444² = 2490659540413162272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1115943399 and 1115943408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1115943443) by changing a digit.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 5607657 + ... + 5607855.

Almost surely, 2^1115943444 is an apocalyptic number.

1115943444 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1115943444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1910890800).

1115943444 is an abundant number, since it is smaller than the sum of its proper divisors (2705838156).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1115943444 is a wasteful number, since it uses less digits than its factorization.

1115943444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268 (or 239 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 1115943444 is about 33405.7396864671. The cubic root of 1115943444 is about 1037.2435153280.

The spelling of 1115943444 in words is "one billion, one hundred fifteen million, nine hundred forty-three thousand, four hundred forty-four".