18193030302 has 16 divisors (see below), whose sum is σ = 36396615312. Its totient is φ = 6062584320.

The previous prime is 18193030253. The next prime is 18193030307. The reversal of 18193030302 is 20303039181.

It is a super-2 number, since 2×18193030302² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 18193030302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18193030307) 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, 417283 + ... + 458814.

It is an arithmetic number, because the mean of its divisors is an integer number (2274788457).

Almost surely, 2^18193030302 is an apocalyptic number.

18193030302 is an abundant number, since it is smaller than the sum of its proper divisors (18203585010).

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

18193030302 is a wasteful number, since it uses less digits than its factorization.

18193030302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 879563.

The product of its (nonzero) digits is 3888, while the sum is 30.

Adding to 18193030302 its reverse (20303039181), we get a palindrome (38496069483).

The spelling of 18193030302 in words is "eighteen billion, one hundred ninety-three million, thirty thousand, three hundred two".