18694953 has 24 divisors (see below), whose sum is σ = 28644096. Its totient is φ = 11728800.

The previous prime is 18694931. The next prime is 18694957. The reversal of 18694953 is 35949681.

It is a happy number.

It is not a de Polignac number, because 18694953 - 2¹² = 18690857 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 18694899 and 18694908.

It is not an unprimeable number, because it can be changed into a prime (18694957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9418 + ... + 11228.

It is an arithmetic number, because the mean of its divisors is an integer number (1193504).

Almost surely, 2^18694953 is an apocalyptic number.

It is an amenable number.

18694953 is a deficient number, since it is larger than the sum of its proper divisors (9949143).

18694953 is a wasteful number, since it uses less digits than its factorization.

18694953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1885 (or 1882 counting only the distinct ones).

The product of its digits is 233280, while the sum is 45.

The square root of 18694953 is about 4323.7660667525. The cubic root of 18694953 is about 265.4044044959.

The spelling of 18694953 in words is "eighteen million, six hundred ninety-four thousand, nine hundred fifty-three".