18900473 has 8 divisors (see below), whose sum is σ = 19288800. Its totient is φ = 18514528.

The previous prime is 18900463. The next prime is 18900487. The reversal of 18900473 is 37400981.

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

It is a cyclic number.

It is not a de Polignac number, because 18900473 - 2¹⁰ = 18899449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18900463) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32933 + ... + 33501.

It is an arithmetic number, because the mean of its divisors is an integer number (2411100).

Almost surely, 2^18900473 is an apocalyptic number.

It is an amenable number.

18900473 is a deficient number, since it is larger than the sum of its proper divisors (388327).

18900473 is an equidigital number, since it uses as much as digits as its factorization.

18900473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1191.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 18900473 is about 4347.4674236847. The cubic root of 18900473 is about 266.3734226132.

The spelling of 18900473 in words is "eighteen million, nine hundred thousand, four hundred seventy-three".