18328395 has 16 divisors (see below), whose sum is σ = 29698560. Its totient is φ = 9650784.

The previous prime is 18328391. The next prime is 18328399. The reversal of 18328395 is 59382381.

It is an interprime number because it is at equal distance from previous prime (18328391) and next prime (18328399).

It is not a de Polignac number, because 18328395 - 2² = 18328391 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18328391) 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, 6549 + ... + 8918.

It is an arithmetic number, because the mean of its divisors is an integer number (1856160).

Almost surely, 2^18328395 is an apocalyptic number.

18328395 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18328395 is a deficient number, since it is larger than the sum of its proper divisors (11370165).

18328395 is a wasteful number, since it uses less digits than its factorization.

18328395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15554.

The product of its digits is 51840, while the sum is 39.

The square root of 18328395 is about 4281.1674809566. The cubic root of 18328395 is about 263.6583188756.

The spelling of 18328395 in words is "eighteen million, three hundred twenty-eight thousand, three hundred ninety-five".