7493845489 has 9 divisors (see below), whose sum is σ = 8115856203. Its totient is φ = 6916357032.

The previous prime is 7493845477. The next prime is 7493845493. The reversal of 7493845489 is 9845483947.

The square root of 7493845489 is 86567.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 1108557025 + 6385288464 = 33295^2 + 79908^2 .

It is a de Polignac number, because none of the positive numbers 2^k-7493845489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7493845459) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1122042 + ... + 1128700.

Almost surely, 2^7493845489 is an apocalyptic number.

7493845489 is the 86567-th square number.

7493845489 is the 43284-th centered octagonal number.

It is an amenable number.

7493845489 is a deficient number, since it is larger than the sum of its proper divisors (622010714).

7493845489 is an frugal number, since it uses more digits than its factorization.

7493845489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13344 (or 6672 counting only the distinct ones).

The product of its digits is 34836480, while the sum is 61.

The cubic root of 7493845489 is about 1956.8982497063.

The spelling of 7493845489 in words is "seven billion, four hundred ninety-three million, eight hundred forty-five thousand, four hundred eighty-nine".