18302020282 has 36 divisors (see below), whose sum is σ = 34580705166. Its totient is φ = 7240353120.

The previous prime is 18302020277. The next prime is 18302020307. The reversal of 18302020282 is 28202020381.

It can be written as a sum of positive squares in 3 ways, for example, as 10976543361 + 7325476921 = 104769^2 + 85589^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 18302020282.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 535969 + ... + 569092.

Almost surely, 2^18302020282 is an apocalyptic number.

18302020282 is a deficient number, since it is larger than the sum of its proper divisors (16278684884).

18302020282 is a wasteful number, since it uses less digits than its factorization.

18302020282 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1105103 (or 1105083 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 28.

Subtracting 18302020282 from its reverse (28202020381), we obtain a palindrome (9900000099).

It can be divided in two parts, 183020 and 20282, that added together give a palindrome (203302).

The spelling of 18302020282 in words is "eighteen billion, three hundred two million, twenty thousand, two hundred eighty-two".