18940246 has 8 divisors (see below), whose sum is σ = 30595824. Its totient is φ = 8741640.

The previous prime is 18940241. The next prime is 18940249. The reversal of 18940246 is 64204981.

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 (18940241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 364210 + ... + 364261.

It is an arithmetic number, because the mean of its divisors is an integer number (3824478).

Almost surely, 2^18940246 is an apocalyptic number.

18940246 is a deficient number, since it is larger than the sum of its proper divisors (11655578).

18940246 is a wasteful number, since it uses less digits than its factorization.

18940246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 728486.

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 18940246 is about 4352.0392921020. The cubic root of 18940246 is about 266.5601383524.

The spelling of 18940246 in words is "eighteen million, nine hundred forty thousand, two hundred forty-six".