7449494520 has 256 divisors, whose sum is σ = 25605901440. Its totient is φ = 1717567488.

The previous prime is 7449494519. The next prime is 7449494527. The reversal of 7449494520 is 254949447.

It is a self number, because there is not a number n which added to its sum of digits gives 7449494520.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7449494527) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6815094 + ... + 6816186.

Almost surely, 2^7449494520 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 7449494520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12802950720).

7449494520 is an abundant number, since it is smaller than the sum of its proper divisors (18156406920).

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

7449494520 is a wasteful number, since it uses less digits than its factorization.

7449494520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1394 (or 1390 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 48.

The square root of 7449494520 is about 86310.4542914704. The cubic root of 7449494520 is about 1953.0300925386.

The spelling of 7449494520 in words is "seven billion, four hundred forty-nine million, four hundred ninety-four thousand, five hundred twenty".