18966948 has 96 divisors (see below), whose sum is σ = 59458560. Its totient is φ = 4544640.

The previous prime is 18966931. The next prime is 18966949. The reversal of 18966948 is 84966981.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 18966948.

It is not an unprimeable number, because it can be changed into a prime (18966949) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11223 + ... + 12801.

It is an arithmetic number, because the mean of its divisors is an integer number (619360).

Almost surely, 2^18966948 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 18966948, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29729280).

18966948 is an abundant number, since it is smaller than the sum of its proper divisors (40491612).

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

18966948 is a wasteful number, since it uses less digits than its factorization.

18966948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1617 (or 1615 counting only the distinct ones).

The product of its digits is 746496, while the sum is 51.

The square root of 18966948 is about 4355.1059688600. The cubic root of 18966948 is about 266.6853452194.

The spelling of 18966948 in words is "eighteen million, nine hundred sixty-six thousand, nine hundred forty-eight".