18343312302 has 32 divisors (see below), whose sum is σ = 41954717952. Its totient is φ = 5237553024.

The previous prime is 18343312277. The next prime is 18343312303. The reversal of 18343312302 is 20321334381.

It is a self number, because there is not a number n which added to its sum of digits gives 18343312302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18343312303) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75388 + ... + 205839.

It is an arithmetic number, because the mean of its divisors is an integer number (1311084936).

Almost surely, 2^18343312302 is an apocalyptic number.

18343312302 is an abundant number, since it is smaller than the sum of its proper divisors (23611405650).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18343312302 is a wasteful number, since it uses less digits than its factorization.

18343312302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282792.

The product of its (nonzero) digits is 10368, while the sum is 30.

Adding to 18343312302 its reverse (20321334381), we get a palindrome (38664646683).

The spelling of 18343312302 in words is "eighteen billion, three hundred forty-three million, three hundred twelve thousand, three hundred two".