18984948 has 12 divisors (see below), whose sum is σ = 44298240. Its totient is φ = 6328312.

The previous prime is 18984947. The next prime is 18984949. The reversal of 18984948 is 84948981.

It is an interprime number because it is at equal distance from previous prime (18984947) and next prime (18984949).

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 18984948.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18984941) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 791028 + ... + 791051.

It is an arithmetic number, because the mean of its divisors is an integer number (3691520).

Almost surely, 2^18984948 is an apocalyptic number.

It is an amenable number.

18984948 is an abundant number, since it is smaller than the sum of its proper divisors (25313292).

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

18984948 is a wasteful number, since it uses less digits than its factorization.

18984948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1582086 (or 1582084 counting only the distinct ones).

The product of its digits is 663552, while the sum is 51.

The square root of 18984948 is about 4357.1720186378. The cubic root of 18984948 is about 266.7696817273.

The spelling of 18984948 in words is "eighteen million, nine hundred eighty-four thousand, nine hundred forty-eight".