18146749 has 8 divisors (see below), whose sum is σ = 19013888. Its totient is φ = 17297280.

The previous prime is 18146743. The next prime is 18146753. The reversal of 18146749 is 94764181.

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 18146749 - 2³ = 18146741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18146741) 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, 2292 + ... + 6445.

It is an arithmetic number, because the mean of its divisors is an integer number (2376736).

Almost surely, 2^18146749 is an apocalyptic number.

It is an amenable number.

18146749 is a deficient number, since it is larger than the sum of its proper divisors (867139).

18146749 is an equidigital number, since it uses as much as digits as its factorization.

18146749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8835.

The product of its digits is 48384, while the sum is 40.

The square root of 18146749 is about 4259.9001161999. The cubic root of 18146749 is about 262.7844185544.

The spelling of 18146749 in words is "eighteen million, one hundred forty-six thousand, seven hundred forty-nine".