18030453 has 16 divisors (see below), whose sum is σ = 27730560. Its totient is φ = 10207296.

The previous prime is 18030451. The next prime is 18030461. The reversal of 18030453 is 35403081.

It is not a de Polignac number, because 18030453 - 2¹ = 18030451 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18030451) 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, 1650 + ... + 6227.

It is an arithmetic number, because the mean of its divisors is an integer number (1733160).

Almost surely, 2^18030453 is an apocalyptic number.

It is an amenable number.

18030453 is a deficient number, since it is larger than the sum of its proper divisors (9700107).

18030453 is a wasteful number, since it uses less digits than its factorization.

18030453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7996.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 18030453 is about 4246.2280909061. The cubic root of 18030453 is about 262.2218514058.

The spelling of 18030453 in words is "eighteen million, thirty thousand, four hundred fifty-three".