7398642544 has 80 divisors (see below), whose sum is σ = 14949328896. Its totient is φ = 3544300800.

The previous prime is 7398642529. The next prime is 7398642547. The reversal of 7398642544 is 4452468937.

It is a super-2 number, since 2×7398642544² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7398642491 and 7398642500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7398642547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17166009 + ... + 17166439.

Almost surely, 2^7398642544 is an apocalyptic number.

7398642544 is a gapful number since it is divisible by the number (74) formed by its first and last digit.

It is an amenable number.

7398642544 is an abundant number, since it is smaller than the sum of its proper divisors (7550686352).

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

7398642544 is a wasteful number, since it uses less digits than its factorization.

7398642544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 854 (or 848 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 52.

The square root of 7398642544 is about 86015.3622558203. The cubic root of 7398642544 is about 1948.5759968745.

The spelling of 7398642544 in words is "seven billion, three hundred ninety-eight million, six hundred forty-two thousand, five hundred forty-four".