18196305 has 8 divisors (see below), whose sum is σ = 29114112. Its totient is φ = 9704688.

The previous prime is 18196303. The next prime is 18196309. The reversal of 18196305 is 50369181.

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

It is not a de Polignac number, because 18196305 - 2¹ = 18196303 is a prime.

It is a super-2 number, since 2×18196305² = 662211031306050, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (18196301) 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, 606529 + ... + 606558.

It is an arithmetic number, because the mean of its divisors is an integer number (3639264).

Almost surely, 2^18196305 is an apocalyptic number.

18196305 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18196305 is a deficient number, since it is larger than the sum of its proper divisors (10917807).

18196305 is a wasteful number, since it uses less digits than its factorization.

18196305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1213095.

The product of its (nonzero) digits is 6480, while the sum is 33.

The square root of 18196305 is about 4265.7127188783. The cubic root of 18196305 is about 263.0234091747.

The spelling of 18196305 in words is "eighteen million, one hundred ninety-six thousand, three hundred five".