7243479918 has 160 divisors (see below), whose sum is σ = 17749062144. Its totient is φ = 2199115008.

The previous prime is 7243479917. The next prime is 7243479977. The reversal of 7243479918 is 8199743427.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7243479917) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 13849605 + ... + 13850127.

Almost surely, 2^7243479918 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7243479918, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8874531072).

7243479918 is an abundant number, since it is smaller than the sum of its proper divisors (10505582226).

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

7243479918 is a wasteful number, since it uses less digits than its factorization.

7243479918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 708 (or 699 counting only the distinct ones).

The product of its digits is 3048192, while the sum is 54.

The square root of 7243479918 is about 85108.6359777902. The cubic root of 7243479918 is about 1934.8579524354.

The spelling of 7243479918 in words is "seven billion, two hundred forty-three million, four hundred seventy-nine thousand, nine hundred eighteen".