18644954 has 16 divisors (see below), whose sum is σ = 29973888. Its totient is φ = 8667072.

The previous prime is 18644921. The next prime is 18644959. The reversal of 18644954 is 45944681.

It is not an unprimeable number, because it can be changed into a prime (18644959) 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, 482 + ... + 6125.

It is an arithmetic number, because the mean of its divisors is an integer number (1873368).

Almost surely, 2^18644954 is an apocalyptic number.

18644954 is a deficient number, since it is larger than the sum of its proper divisors (11328934).

18644954 is a wasteful number, since it uses less digits than its factorization.

18644954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6709.

The product of its digits is 138240, while the sum is 41.

The square root of 18644954 is about 4317.9803149158. The cubic root of 18644954 is about 265.1675883092.

The spelling of 18644954 in words is "eighteen million, six hundred forty-four thousand, nine hundred fifty-four".