18049300 has 36 divisors (see below), whose sum is σ = 39407200. Its totient is φ = 7175520.

The previous prime is 18049279. The next prime is 18049313. The reversal of 18049300 is 394081.

18049300 is nontrivially palindromic in base 7.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19447 + ... + 20353.

Almost surely, 2^18049300 is an apocalyptic number.

18049300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18049300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19703600).

18049300 is an abundant number, since it is smaller than the sum of its proper divisors (21357900).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18049300 is a wasteful number, since it uses less digits than its factorization.

18049300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1120 (or 1113 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 18049300 is about 4248.4467749991. The cubic root of 18049300 is about 262.3131852963.

The spelling of 18049300 in words is "eighteen million, forty-nine thousand, three hundred".