18049346 has 32 divisors (see below), whose sum is σ = 32054400. Its totient is φ = 7618128.

The previous prime is 18049333. The next prime is 18049349. The reversal of 18049346 is 64394081.

It is not an unprimeable number, because it can be changed into a prime (18049349) 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, 56780 + ... + 57096.

It is an arithmetic number, because the mean of its divisors is an integer number (1001700).

Almost surely, 2^18049346 is an apocalyptic number.

18049346 is a deficient number, since it is larger than the sum of its proper divisors (14005054).

18049346 is an equidigital number, since it uses as much as digits as its factorization.

18049346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423 (or 409 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 18049346 is about 4248.4521887389. The cubic root of 18049346 is about 262.3134081378.

The spelling of 18049346 in words is "eighteen million, forty-nine thousand, three hundred forty-six".