18048775 has 6 divisors (see below), whose sum is σ = 22380512. Its totient is φ = 14439000.

The previous prime is 18048769. The next prime is 18048809. The reversal of 18048775 is 57784081.

It is not a de Polignac number, because 18048775 - 2¹⁵ = 18016007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 360951 + ... + 361000.

Almost surely, 2^18048775 is an apocalyptic number.

18048775 is a deficient number, since it is larger than the sum of its proper divisors (4331737).

18048775 is an equidigital number, since it uses as much as digits as its factorization.

18048775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 721961 (or 721956 counting only the distinct ones).

The product of its (nonzero) digits is 62720, while the sum is 40.

The square root of 18048775 is about 4248.3849872628. The cubic root of 18048775 is about 262.3106419704.

The spelling of 18048775 in words is "eighteen million, forty-eight thousand, seven hundred seventy-five".