18488985213924 has 81 divisors (see below), whose sum is σ = 47088676894441. Its totient is φ = 6116840137920.

The previous prime is 18488985213901. The next prime is 18488985213947. The reversal of 18488985213924 is 42931258988481.

The square root of 18488985213924 is 4299882.

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

18488985213924 is a `hidden beast` number, since 1 + 8 + 4 + 8 + 8 + 9 + 8 + 521 + 3 + 92 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (18488985213901) and next prime (18488985213947).

It can be written as a sum of positive squares in only one way, i.e., 10860517980900 + 7628467233024 = 3295530^2 + 2761968^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 3534500389 + ... + 3534505619.

Almost surely, 2^{18488985213924} is an apocalyptic number.

18488985213924 is the 4299882-nd square number.

It is an amenable number.

18488985213924 is an abundant number, since it is smaller than the sum of its proper divisors (28599691680517).

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

18488985213924 is an frugal number, since it uses more digits than its factorization.

18488985213924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10746 (or 5373 counting only the distinct ones).

The product of its digits is 318504960, while the sum is 72.

The spelling of 18488985213924 in words is "eighteen trillion, four hundred eighty-eight billion, nine hundred eighty-five million, two hundred thirteen thousand, nine hundred twenty-four".