18552473 has 4 divisors (see below), whose sum is σ = 18562320. Its totient is φ = 18542628.

The previous prime is 18552433. The next prime is 18552481. The reversal of 18552473 is 37425581.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18552473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18552433) 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, 1115 + ... + 6192.

It is an arithmetic number, because the mean of its divisors is an integer number (4640580).

Almost surely, 2^18552473 is an apocalyptic number.

It is an amenable number.

18552473 is a deficient number, since it is larger than the sum of its proper divisors (9847).

18552473 is an equidigital number, since it uses as much as digits as its factorization.

18552473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9846.

The product of its digits is 33600, while the sum is 35.

The square root of 18552473 is about 4307.2581766131. The cubic root of 18552473 is about 264.7284414073.

The spelling of 18552473 in words is "eighteen million, five hundred fifty-two thousand, four hundred seventy-three".