18382018202 has 4 divisors (see below), whose sum is σ = 27573027306. Its totient is φ = 9191009100.

The previous prime is 18382018183. The next prime is 18382018253. The reversal of 18382018202 is 20281028381.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 17171743681 + 1210274521 = 131041^2 + 34789^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4595504549 + ... + 4595504552.

Almost surely, 2^18382018202 is an apocalyptic number.

18382018202 is a deficient number, since it is larger than the sum of its proper divisors (9191009104).

18382018202 is an equidigital number, since it uses as much as digits as its factorization.

18382018202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9191009103.

The product of its (nonzero) digits is 12288, while the sum is 35.

The spelling of 18382018202 in words is "eighteen billion, three hundred eighty-two million, eighteen thousand, two hundred two".