18698145 has 8 divisors (see below), whose sum is σ = 29917056. Its totient is φ = 9972336.

The previous prime is 18698137. The next prime is 18698153. The reversal of 18698145 is 54189681.

It is an interprime number because it is at equal distance from previous prime (18698137) and next prime (18698153).

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

It is not a de Polignac number, because 18698145 - 2³ = 18698137 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 18698097 and 18698106.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 623257 + ... + 623286.

It is an arithmetic number, because the mean of its divisors is an integer number (3739632).

Almost surely, 2^18698145 is an apocalyptic number.

18698145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18698145 is a deficient number, since it is larger than the sum of its proper divisors (11218911).

18698145 is a wasteful number, since it uses less digits than its factorization.

18698145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1246551.

The product of its digits is 69120, while the sum is 42.

The square root of 18698145 is about 4324.1351736503. The cubic root of 18698145 is about 265.4195087979.

The spelling of 18698145 in words is "eighteen million, six hundred ninety-eight thousand, one hundred forty-five".