1149445472 has 48 divisors (see below), whose sum is σ = 2597962752. Its totient is φ = 490389120.

The previous prime is 1149445459. The next prime is 1149445511. The reversal of 1149445472 is 2745449411.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38447 + ... + 61457.

It is an arithmetic number, because the mean of its divisors is an integer number (54124224).

Almost surely, 2^1149445472 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 1149445472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1298981376).

1149445472 is an abundant number, since it is smaller than the sum of its proper divisors (1448517280).

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

1149445472 is a wasteful number, since it uses less digits than its factorization.

1149445472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23251 (or 23243 counting only the distinct ones).

The product of its digits is 161280, while the sum is 41.

The square root of 1149445472 is about 33903.4728604608. The cubic root of 1149445472 is about 1047.5211280705.

The spelling of 1149445472 in words is "one billion, one hundred forty-nine million, four hundred forty-five thousand, four hundred seventy-two".