18642948 has 24 divisors (see below), whose sum is σ = 46059552. Its totient is φ = 5848704.

The previous prime is 18642941. The next prime is 18642961. The reversal of 18642948 is 84924681.

It is not an unprimeable number, because it can be changed into a prime (18642941) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45490 + ... + 45897.

It is an arithmetic number, because the mean of its divisors is an integer number (1919148).

Almost surely, 2^18642948 is an apocalyptic number.

It is an amenable number.

18642948 is an abundant number, since it is smaller than the sum of its proper divisors (27416604).

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

18642948 is a wasteful number, since it uses less digits than its factorization.

18642948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91411 (or 91409 counting only the distinct ones).

The product of its digits is 110592, while the sum is 42.

The square root of 18642948 is about 4317.7480241441. The cubic root of 18642948 is about 265.1580782248.

It can be divided in two parts, 186 and 42948, that added together give a palindrome (43134).

The spelling of 18642948 in words is "eighteen million, six hundred forty-two thousand, nine hundred forty-eight".