18328445 has 8 divisors (see below), whose sum is σ = 23151840. Its totient is φ = 13890960.

The previous prime is 18328439. The next prime is 18328451. The reversal of 18328445 is 54482381.

It is an interprime number because it is at equal distance from previous prime (18328439) and next prime (18328451).

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

It is not a de Polignac number, because 18328445 - 2⁶ = 18328381 is a prime.

It is a super-2 number, since 2×18328445² = 671863792236050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96371 + ... + 96560.

It is an arithmetic number, because the mean of its divisors is an integer number (2893980).

Almost surely, 2^18328445 is an apocalyptic number.

It is an amenable number.

18328445 is a deficient number, since it is larger than the sum of its proper divisors (4823395).

18328445 is a wasteful number, since it uses less digits than its factorization.

18328445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192955.

The product of its digits is 30720, while the sum is 35.

The square root of 18328445 is about 4281.1733204812. The cubic root of 18328445 is about 263.6585586294.

The spelling of 18328445 in words is "eighteen million, three hundred twenty-eight thousand, four hundred forty-five".