7493889872 has 30 divisors (see below), whose sum is σ = 16889929578. Its totient is φ = 3211666752.

The previous prime is 7493889869. The next prime is 7493889881. The reversal of 7493889872 is 2789883947.

It can be written as a sum of positive squares in only one way, i.e., 6292296976 + 1201592896 = 79324^2 + 34664^2 .

It is a junction number, because it is equal to n+sod(n) for n = 7493889799 and 7493889808.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4778483 + ... + 4780050.

Almost surely, 2^7493889872 is an apocalyptic number.

It is an amenable number.

7493889872 is an abundant number, since it is smaller than the sum of its proper divisors (9396039706).

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

7493889872 is a wasteful number, since it uses less digits than its factorization.

7493889872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9558555 (or 9558542 counting only the distinct ones).

The product of its digits is 48771072, while the sum is 65.

The square root of 7493889872 is about 86567.2563501928. The cubic root of 7493889872 is about 1956.9021130029.

The spelling of 7493889872 in words is "seven billion, four hundred ninety-three million, eight hundred eighty-nine thousand, eight hundred seventy-two".