18381838202 has 16 divisors (see below), whose sum is σ = 33935701632. Its totient is φ = 7271935920.

The previous prime is 18381838201. The next prime is 18381838207. The reversal of 18381838202 is 20283818381.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (18381838201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50499374 + ... + 50499737.

It is an arithmetic number, because the mean of its divisors is an integer number (2120981352).

Almost surely, 2^18381838202 is an apocalyptic number.

18381838202 is a deficient number, since it is larger than the sum of its proper divisors (15553863430).

18381838202 is a wasteful number, since it uses less digits than its factorization.

18381838202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100999133.

The product of its (nonzero) digits is 147456, while the sum is 44.

The spelling of 18381838202 in words is "eighteen billion, three hundred eighty-one million, eight hundred thirty-eight thousand, two hundred two".