7449781452 has 48 divisors (see below), whose sum is σ = 17463788160. Its totient is φ = 2471724288.

The previous prime is 7449781447. The next prime is 7449781453. The reversal of 7449781452 is 2541879447.

It is a junction number, because it is equal to n+sod(n) for n = 7449781395 and 7449781404.

It is not an unprimeable number, because it can be changed into a prime (7449781453) 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, 2628228 + ... + 2631060.

It is an arithmetic number, because the mean of its divisors is an integer number (363828920).

Almost surely, 2^7449781452 is an apocalyptic number.

It is an amenable number.

7449781452 is an abundant number, since it is smaller than the sum of its proper divisors (10014006708).

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

7449781452 is a wasteful number, since it uses less digits than its factorization.

7449781452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3782 (or 3780 counting only the distinct ones).

The product of its digits is 2257920, while the sum is 51.

The square root of 7449781452 is about 86312.1164843036. The cubic root of 7449781452 is about 1953.0551671542.

The spelling of 7449781452 in words is "seven billion, four hundred forty-nine million, seven hundred eighty-one thousand, four hundred fifty-two".