18048715 has 4 divisors (see below), whose sum is σ = 21658464. Its totient is φ = 14438968.

The previous prime is 18048683. The next prime is 18048757. The reversal of 18048715 is 51784081.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 51784081 = 2459 ⋅21059.

It is a cyclic number.

It is not a de Polignac number, because 18048715 - 2⁵ = 18048683 is a prime.

It is a super-2 number, since 2×18048715² = 651512226302450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1804867 + ... + 1804876.

It is an arithmetic number, because the mean of its divisors is an integer number (5414616).

Almost surely, 2^18048715 is an apocalyptic number.

18048715 is a deficient number, since it is larger than the sum of its proper divisors (3609749).

18048715 is an equidigital number, since it uses as much as digits as its factorization.

18048715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3609748.

The product of its (nonzero) digits is 8960, while the sum is 34.

The square root of 18048715 is about 4248.3779257500. The cubic root of 18048715 is about 262.3103513015.

The spelling of 18048715 in words is "eighteen million, forty-eight thousand, seven hundred fifteen".