18226761 has 24 divisors (see below), whose sum is σ = 28898880. Its totient is φ = 9998016.

The previous prime is 18226759. The next prime is 18226799. The reversal of 18226761 is 16762281.

It is not a de Polignac number, because 18226761 - 2¹ = 18226759 is a prime.

It is a super-2 number, since 2×18226761² = 664429633102242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18226361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 105271 + ... + 105443.

It is an arithmetic number, because the mean of its divisors is an integer number (1204120).

Almost surely, 2^18226761 is an apocalyptic number.

It is an amenable number.

18226761 is a deficient number, since it is larger than the sum of its proper divisors (10672119).

18226761 is an equidigital number, since it uses as much as digits as its factorization.

18226761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385 (or 212 counting only the distinct ones).

The product of its digits is 8064, while the sum is 33.

The square root of 18226761 is about 4269.2810870216. The cubic root of 18226761 is about 263.1700722077.

The spelling of 18226761 in words is "eighteen million, two hundred twenty-six thousand, seven hundred sixty-one".