18497385 has 24 divisors (see below), whose sum is σ = 32610240. Its totient is φ = 9696672.

The previous prime is 18497321. The next prime is 18497419. The reversal of 18497385 is 58379481.

18497385 is a `hidden beast` number, since 184 + 97 + 385 = 666.

It is not a de Polignac number, because 18497385 - 2⁶ = 18497321 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 18497385.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 829 + ... + 6138.

It is an arithmetic number, because the mean of its divisors is an integer number (1358760).

Almost surely, 2^18497385 is an apocalyptic number.

18497385 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18497385 is a deficient number, since it is larger than the sum of its proper divisors (14112855).

18497385 is a wasteful number, since it uses less digits than its factorization.

18497385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7037 (or 7034 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 18497385 is about 4300.8586352030. The cubic root of 18497385 is about 264.4661615772.

The spelling of 18497385 in words is "eighteen million, four hundred ninety-seven thousand, three hundred eighty-five".