18825697312 has 24 divisors (see below), whose sum is σ = 37218182400. Its totient is φ = 9373460544.

The previous prime is 18825697307. The next prime is 18825697327. The reversal of 18825697312 is 21379652881.

It is a happy number.

It is a Smith number, since the sum of its digits (52) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 18825697312.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1223112 + ... + 1238407.

It is an arithmetic number, because the mean of its divisors is an integer number (1550757600).

Almost surely, 2^18825697312 is an apocalyptic number.

It is an amenable number.

18825697312 is a deficient number, since it is larger than the sum of its proper divisors (18392485088).

18825697312 is a wasteful number, since it uses less digits than its factorization.

18825697312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2461768 (or 2461760 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 52.

It can be divided in two parts, 1882569 and 7312, that added together give a palindrome (1889881).

The spelling of 18825697312 in words is "eighteen billion, eight hundred twenty-five million, six hundred ninety-seven thousand, three hundred twelve".