18472499 has 8 divisors (see below), whose sum is σ = 18984240. Its totient is φ = 17964576.

The previous prime is 18472483. The next prime is 18472501. The reversal of 18472499 is 99427481.

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 18472499 - 2⁴ = 18472483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18472439) 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, 10769 + ... + 12365.

It is an arithmetic number, because the mean of its divisors is an integer number (2373030).

Almost surely, 2^18472499 is an apocalyptic number.

18472499 is a deficient number, since it is larger than the sum of its proper divisors (511741).

18472499 is a wasteful number, since it uses less digits than its factorization.

18472499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1909.

The product of its digits is 145152, while the sum is 44.

The square root of 18472499 is about 4297.9645182342. The cubic root of 18472499 is about 264.3475059106.

The spelling of 18472499 in words is "eighteen million, four hundred seventy-two thousand, four hundred ninety-nine".