18728000587396 has 27 divisors (see below), whose sum is σ = 33230231158383. Its totient is φ = 9235414730880.

The previous prime is 18728000587393. The next prime is 18728000587441. The reversal of 18728000587396 is 69378500082781.

It is a happy number.

The square root of 18728000587396 is 4327586.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 6329601856900 + 12398398730496 = 2515870^2 + 3521136^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18728000587393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 631812736 + ... + 631842376.

Almost surely, 2^{18728000587396} is an apocalyptic number.

18728000587396 is the 4327586-th square number.

It is an amenable number.

18728000587396 is a deficient number, since it is larger than the sum of its proper divisors (14502230570987).

18728000587396 is an frugal number, since it uses more digits than its factorization.

18728000587396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59432 (or 29716 counting only the distinct ones).

The product of its (nonzero) digits is 40642560, while the sum is 64.

The spelling of 18728000587396 in words is "eighteen trillion, seven hundred twenty-eight billion, five hundred eighty-seven thousand, three hundred ninety-six".