18424954 has 4 divisors (see below), whose sum is σ = 27637434. Its totient is φ = 9212476.

The previous prime is 18424951. The next prime is 18424961. The reversal of 18424954 is 45942481.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 10387729 + 8037225 = 3223^2 + 2835^2 .

It is not an unprimeable number, because it can be changed into a prime (18424951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4606237 + ... + 4606240.

Almost surely, 2^18424954 is an apocalyptic number.

18424954 is a deficient number, since it is larger than the sum of its proper divisors (9212480).

18424954 is an equidigital number, since it uses as much as digits as its factorization.

18424954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9212479.

The product of its digits is 46080, while the sum is 37.

The square root of 18424954 is about 4292.4298479998. The cubic root of 18424954 is about 264.1205162186.

The spelling of 18424954 in words is "eighteen million, four hundred twenty-four thousand, nine hundred fifty-four".