18334749 has 16 divisors (see below), whose sum is σ = 26135424. Its totient is φ = 11404800.

The previous prime is 18334741. The next prime is 18334759. The reversal of 18334749 is 94743381.

It is not a de Polignac number, because 18334749 - 2³ = 18334741 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18334741) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 412 + ... + 6069.

It is an arithmetic number, because the mean of its divisors is an integer number (1633464).

Almost surely, 2^18334749 is an apocalyptic number.

It is an amenable number.

18334749 is a deficient number, since it is larger than the sum of its proper divisors (7800675).

18334749 is a wasteful number, since it uses less digits than its factorization.

18334749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6548.

The product of its digits is 72576, while the sum is 39.

The square root of 18334749 is about 4281.9095039480. The cubic root of 18334749 is about 263.6887832889.

The spelling of 18334749 in words is "eighteen million, three hundred thirty-four thousand, seven hundred forty-nine".