18068453 has 8 divisors (see below), whose sum is σ = 19496568. Its totient is φ = 16645824.

The previous prime is 18068441. The next prime is 18068473. The reversal of 18068453 is 35486081.

It can be written as a sum of positive squares in 4 ways, for example, as 5094049 + 12974404 = 2257^2 + 3602^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18068453 - 2¹⁶ = 18002917 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18068473) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7775 + ... + 9827.

It is an arithmetic number, because the mean of its divisors is an integer number (2437071).

Almost surely, 2^18068453 is an apocalyptic number.

18068453 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

18068453 is a deficient number, since it is larger than the sum of its proper divisors (1428115).

18068453 is a wasteful number, since it uses less digits than its factorization.

18068453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2743.

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 18068453 is about 4250.7002952455. The cubic root of 18068453 is about 262.4059369706.

The spelling of 18068453 in words is "eighteen million, sixty-eight thousand, four hundred fifty-three".