18942968448 has 160 divisors (see below), whose sum is σ = 56596462560. Its totient is φ = 6289408512.

The previous prime is 18942968411. The next prime is 18942968449. The reversal of 18942968448 is 84486924981.

18942968448 is a `hidden beast` number, since 18 + 94 + 2 + 96 + 8 + 448 = 666.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (18942968449) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2723311 + ... + 2730257.

It is an arithmetic number, because the mean of its divisors is an integer number (353727891).

Almost surely, 2^18942968448 is an apocalyptic number.

18942968448 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18942968448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28298231280).

18942968448 is an abundant number, since it is smaller than the sum of its proper divisors (37653494112).

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

18942968448 is an equidigital number, since it uses as much as digits as its factorization.

18942968448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7236 (or 7215 counting only the distinct ones).

The product of its digits is 31850496, while the sum is 63.

The spelling of 18942968448 in words is "eighteen billion, nine hundred forty-two million, nine hundred sixty-eight thousand, four hundred forty-eight".