18693460000 has 60 divisors (see below), whose sum is σ = 45988764822. Its totient is φ = 7477376000.

The previous prime is 18693459991. The next prime is 18693460003. The reversal of 18693460000 is 6439681.

It can be written as a sum of positive squares in 5 ways, for example, as 992754064 + 17700705936 = 31508^2 + 133044^2 .

It is not an unprimeable number, because it can be changed into a prime (18693460003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 447337 + ... + 487336.

Almost surely, 2^18693460000 is an apocalyptic number.

18693460000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18693460000 is an abundant number, since it is smaller than the sum of its proper divisors (27295304822).

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

18693460000 is an frugal number, since it uses more digits than its factorization.

18693460000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 934703 (or 934680 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 37.

Adding to 18693460000 its reverse (6439681), we get a palindrome (18699899681).

The spelling of 18693460000 in words is "eighteen billion, six hundred ninety-three million, four hundred sixty thousand".