18046749 has 24 divisors (see below), whose sum is σ = 28153440. Its totient is φ = 10252704.

The previous prime is 18046739. The next prime is 18046783. The reversal of 18046749 is 94764081.

It is a happy number.

It is not a de Polignac number, because 18046749 - 2⁷ = 18046621 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18046739) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 42862 + ... + 43280.

It is an arithmetic number, because the mean of its divisors is an integer number (1173060).

Almost surely, 2^18046749 is an apocalyptic number.

It is an amenable number.

18046749 is a deficient number, since it is larger than the sum of its proper divisors (10106691).

18046749 is a wasteful number, since it uses less digits than its factorization.

18046749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 729 (or 722 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 18046749 is about 4248.1465370206. The cubic root of 18046749 is about 262.3008266922.

The spelling of 18046749 in words is "eighteen million, forty-six thousand, seven hundred forty-nine".