5021613818 has 16 divisors (see below), whose sum is σ = 8244821256. Its totient is φ = 2279672640.

The previous prime is 5021613781. The next prime is 5021613823. The reversal of 5021613818 is 8183161205.

It can be written as a sum of positive squares in 4 ways, for example, as 2937965209 + 2083648609 = 54203^2 + 45647^2 .

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 1581521 + ... + 1584692.

Almost surely, 2^5021613818 is an apocalyptic number.

5021613818 is a deficient number, since it is larger than the sum of its proper divisors (3223207438).

5021613818 is a wasteful number, since it uses less digits than its factorization.

5021613818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3166289.

The product of its (nonzero) digits is 11520, while the sum is 35.

The square root of 5021613818 is about 70863.3460824424. The cubic root of 5021613818 is about 1712.4363454273.

The spelling of 5021613818 in words is "five billion, twenty-one million, six hundred thirteen thousand, eight hundred eighteen".