18226797 has 16 divisors (see below), whose sum is σ = 25016640. Its totient is φ = 11797632.

The previous prime is 18226759. The next prime is 18226799. The reversal of 18226797 is 79762281.

It is not a de Polignac number, because 18226797 - 2¹⁶ = 18161261 is a prime.

It is a super-2 number, since 2×18226797² = 664432257758418, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18226799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29233 + ... + 29849.

It is an arithmetic number, because the mean of its divisors is an integer number (1563540).

Almost surely, 2^18226797 is an apocalyptic number.

It is an amenable number.

18226797 is a deficient number, since it is larger than the sum of its proper divisors (6789843).

18226797 is a wasteful number, since it uses less digits than its factorization.

18226797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 892.

The product of its digits is 84672, while the sum is 42.

The square root of 18226797 is about 4269.2853031860. The cubic root of 18226797 is about 263.1702454716.

The spelling of 18226797 in words is "eighteen million, two hundred twenty-six thousand, seven hundred ninety-seven".