18964476 has 48 divisors (see below), whose sum is σ = 49744800. Its totient is φ = 6247296.

The previous prime is 18964471. The next prime is 18964481. The reversal of 18964476 is 67446981.

It is an interprime number because it is at equal distance from previous prime (18964471) and next prime (18964481).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18964471) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8626 + ... + 10598.

It is an arithmetic number, because the mean of its divisors is an integer number (1036350).

Almost surely, 2^18964476 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18964476, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24872400).

18964476 is an abundant number, since it is smaller than the sum of its proper divisors (30780324).

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

18964476 is a wasteful number, since it uses less digits than its factorization.

18964476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2075 (or 2067 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 18964476 is about 4354.8221548072. The cubic root of 18964476 is about 266.6737588392.

The spelling of 18964476 in words is "eighteen million, nine hundred sixty-four thousand, four hundred seventy-six".