18293013 has 16 divisors (see below), whose sum is σ = 27269760. Its totient is φ = 12119328.

The previous prime is 18292999. The next prime is 18293021. The reversal of 18293013 is 31039281.

It is not a de Polignac number, because 18293013 - 2¹² = 18288917 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18293083) 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, 2481 + ... + 6537.

It is an arithmetic number, because the mean of its divisors is an integer number (1704360).

Almost surely, 2^18293013 is an apocalyptic number.

It is an amenable number.

18293013 is a deficient number, since it is larger than the sum of its proper divisors (8976747).

18293013 is a wasteful number, since it uses less digits than its factorization.

18293013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4233 (or 4227 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 18293013 is about 4277.0332007128. The cubic root of 18293013 is about 263.4885500920.

The spelling of 18293013 in words is "eighteen million, two hundred ninety-three thousand, thirteen".