18954974 has 8 divisors (see below), whose sum is σ = 28567848. Its totient is φ = 9432360.

The previous prime is 18954917. The next prime is 18954979. The reversal of 18954974 is 47945981.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18954979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22037 + ... + 22880.

It is an arithmetic number, because the mean of its divisors is an integer number (3570981).

Almost surely, 2^18954974 is an apocalyptic number.

18954974 is a deficient number, since it is larger than the sum of its proper divisors (9612874).

18954974 is a wasteful number, since it uses less digits than its factorization.

18954974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45130.

The product of its digits is 362880, while the sum is 47.

The square root of 18954974 is about 4353.7310435993. The cubic root of 18954974 is about 266.6292131426.

The spelling of 18954974 in words is "eighteen million, nine hundred fifty-four thousand, nine hundred seventy-four".