18974698 has 4 divisors (see below), whose sum is σ = 28462050. Its totient is φ = 9487348.

The previous prime is 18974693. The next prime is 18974717. The reversal of 18974698 is 89647981.

It is a happy number.

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., 18774889 + 199809 = 4333^2 + 447^2 .

It is not an unprimeable number, because it can be changed into a prime (18974693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4743673 + ... + 4743676.

Almost surely, 2^18974698 is an apocalyptic number.

18974698 is a deficient number, since it is larger than the sum of its proper divisors (9487352).

18974698 is an equidigital number, since it uses as much as digits as its factorization.

18974698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9487351.

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

The square root of 18974698 is about 4355.9956381980. The cubic root of 18974698 is about 266.7216633096.

The spelling of 18974698 in words is "eighteen million, nine hundred seventy-four thousand, six hundred ninety-eight".