18452385 has 24 divisors (see below), whose sum is σ = 36553920. Its totient is φ = 8435232.

The previous prime is 18452383. The next prime is 18452387. The reversal of 18452385 is 58325481.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (18452383) and next prime (18452387).

It is not a de Polignac number, because 18452385 - 2¹ = 18452383 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18452383) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28975 + ... + 29604.

It is an arithmetic number, because the mean of its divisors is an integer number (1523080).

Almost surely, 2^18452385 is an apocalyptic number.

18452385 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18452385 is a deficient number, since it is larger than the sum of its proper divisors (18101535).

18452385 is a wasteful number, since it uses less digits than its factorization.

18452385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58597 (or 58594 counting only the distinct ones).

The product of its digits is 38400, while the sum is 36.

The square root of 18452385 is about 4295.6239360540. The cubic root of 18452385 is about 264.2515250914.

The spelling of 18452385 in words is "eighteen million, four hundred fifty-two thousand, three hundred eighty-five".