18750003 has 8 divisors (see below), whose sum is σ = 25258128. Its totient is φ = 12370944.

The previous prime is 18750001. The next prime is 18750019. The reversal of 18750003 is 30005781.

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

It is not a de Polignac number, because 18750003 - 2¹ = 18750001 is a prime.

It is a super-2 number, since 2×18750003² = 703125225000018, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18750001) 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, 31926 + ... + 32507.

It is an arithmetic number, because the mean of its divisors is an integer number (3157266).

Almost surely, 2^18750003 is an apocalyptic number.

18750003 is a deficient number, since it is larger than the sum of its proper divisors (6508125).

18750003 is an equidigital number, since it uses as much as digits as its factorization.

18750003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64533.

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 18750003 is about 4330.1273653323. The cubic root of 18750003 is about 265.6646564644.

Adding to 18750003 its reverse (30005781), we get a palindrome (48755784).

The spelling of 18750003 in words is "eighteen million, seven hundred fifty thousand, three".