18869974 has 8 divisors (see below), whose sum is σ = 28461888. Its totient is φ = 9382680.

The previous prime is 18869957. The next prime is 18870011. The reversal of 18869974 is 47996881.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25702 + ... + 26425.

It is an arithmetic number, because the mean of its divisors is an integer number (3557736).

Almost surely, 2^18869974 is an apocalyptic number.

18869974 is a deficient number, since it is larger than the sum of its proper divisors (9591914).

18869974 is a wasteful number, since it uses less digits than its factorization.

18869974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52310.

The product of its digits is 870912, while the sum is 52.

The square root of 18869974 is about 4343.9583331335. The cubic root of 18869974 is about 266.2300664689.

The spelling of 18869974 in words is "eighteen million, eight hundred sixty-nine thousand, nine hundred seventy-four".