18750115 has 8 divisors (see below), whose sum is σ = 22771728. Its totient is φ = 14819040.

The previous prime is 18750113. The next prime is 18750139. The reversal of 18750115 is 51105781.

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

It is not a de Polignac number, because 18750115 - 2¹ = 18750113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18750113) 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, 22176 + ... + 23005.

It is an arithmetic number, because the mean of its divisors is an integer number (2846466).

Almost surely, 2^18750115 is an apocalyptic number.

18750115 is a deficient number, since it is larger than the sum of its proper divisors (4021613).

18750115 is an equidigital number, since it uses as much as digits as its factorization.

18750115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45269.

The product of its (nonzero) digits is 1400, while the sum is 28.

The square root of 18750115 is about 4330.1402979580. The cubic root of 18750115 is about 265.6651854311.

Adding to 18750115 its reverse (51105781), we get a palindrome (69855896).

It can be divided in two parts, 1875011 and 5, that added together give a triangular number (1875016 = T₁₉₃₆).

The spelling of 18750115 in words is "eighteen million, seven hundred fifty thousand, one hundred fifteen".