1149181344 has 120 divisors (see below), whose sum is σ = 3407298048. Its totient is φ = 379935360.

The previous prime is 1149181331. The next prime is 1149181373. The reversal of 1149181344 is 4431819411.

It is a super-2 number, since 2×1149181344² = 2641235522795292672, which contains 22 as substring.

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

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 1149181299 and 1149181308.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 327439 + ... + 330929.

Almost surely, 2^1149181344 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1149181344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1703649024).

1149181344 is an abundant number, since it is smaller than the sum of its proper divisors (2258116704).

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

1149181344 is a wasteful number, since it uses less digits than its factorization.

1149181344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3640 (or 3623 counting only the distinct ones).

The product of its digits is 13824, while the sum is 36.

The square root of 1149181344 is about 33899.5773424979. The cubic root of 1149181344 is about 1047.4408862314.

The spelling of 1149181344 in words is "one billion, one hundred forty-nine million, one hundred eighty-one thousand, three hundred forty-four".