18948974 has 8 divisors (see below), whose sum is σ = 31007448. Its totient is φ = 8613160.

The previous prime is 18948973. The next prime is 18948991. The reversal of 18948974 is 47984981.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18948973) 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 in 3 ways as a sum of consecutive naturals, for example, 430637 + ... + 430680.

It is an arithmetic number, because the mean of its divisors is an integer number (3875931).

Almost surely, 2^18948974 is an apocalyptic number.

18948974 is a deficient number, since it is larger than the sum of its proper divisors (12058474).

18948974 is a wasteful number, since it uses less digits than its factorization.

18948974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 861330.

The product of its digits is 580608, while the sum is 50.

The square root of 18948974 is about 4353.0419249072. The cubic root of 18948974 is about 266.6010772717.

The spelling of 18948974 in words is "eighteen million, nine hundred forty-eight thousand, nine hundred seventy-four".