1155823444 has 12 divisors (see below), whose sum is σ = 2038618624. Its totient is φ = 573360984.

The previous prime is 1155823441. The next prime is 1155823451. The reversal of 1155823444 is 4443285511.

It is a super-2 number, since 2×1155823444² = 2671855667400042272, which contains 22 as substring.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1155823441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1137114 + ... + 1138129.

Almost surely, 2^1155823444 is an apocalyptic number.

It is an amenable number.

1155823444 is a deficient number, since it is larger than the sum of its proper divisors (882795180).

1155823444 is a wasteful number, since it uses less digits than its factorization.

1155823444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2275374 (or 2275372 counting only the distinct ones).

The product of its digits is 76800, while the sum is 37.

The square root of 1155823444 is about 33997.4034890902. The cubic root of 1155823444 is about 1049.4550290651.

The spelling of 1155823444 in words is "one billion, one hundred fifty-five million, eight hundred twenty-three thousand, four hundred forty-four".