5221031818 has 16 divisors (see below), whose sum is σ = 7888946400. Its totient is φ = 2591404816.

The previous prime is 5221031797. The next prime is 5221031821. The reversal of 5221031818 is 8181301225.

It is a self number, because there is not a number n which added to its sum of digits gives 5221031818.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 592521 + ... + 601267.

It is an arithmetic number, because the mean of its divisors is an integer number (493059150).

Almost surely, 2^5221031818 is an apocalyptic number.

5221031818 is a deficient number, since it is larger than the sum of its proper divisors (2667914582).

5221031818 is a wasteful number, since it uses less digits than its factorization.

5221031818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10901.

The product of its (nonzero) digits is 3840, while the sum is 31.

The square root of 5221031818 is about 72256.7077716664. The cubic root of 5221031818 is about 1734.8107845377.

The spelling of 5221031818 in words is "five billion, two hundred twenty-one million, thirty-one thousand, eight hundred eighteen".