18798298064 has 60 divisors (see below), whose sum is σ = 45627212484. Its totient is φ = 7436685312.

The previous prime is 18798298007. The next prime is 18798298067. The reversal of 18798298064 is 46089289781.

It can be written as a sum of positive squares in 2 ways, for example, as 1376410000 + 17421888064 = 37100^2 + 131992^2 .

It is a super-2 number, since 2×18798298064² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18798297988 and 18798298006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18798298067) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 912017 + ... + 932400.

Almost surely, 2^18798298064 is an apocalyptic number.

18798298064 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

18798298064 is an abundant number, since it is smaller than the sum of its proper divisors (26828914420).

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

18798298064 is a wasteful number, since it uses less digits than its factorization.

18798298064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1844452 (or 1844439 counting only the distinct ones).

The product of its (nonzero) digits is 13934592, while the sum is 62.

The spelling of 18798298064 in words is "eighteen billion, seven hundred ninety-eight million, two hundred ninety-eight thousand, sixty-four".