18682965 has 72 divisors (see below), whose sum is σ = 38858040. Its totient is φ = 8273664.

The previous prime is 18682957. The next prime is 18682967. The reversal of 18682965 is 56928681.

It can be written as a sum of positive squares in 4 ways, for example, as 9790641 + 8892324 = 3129^2 + 2982^2 .

It is not a de Polignac number, because 18682965 - 2³ = 18682957 is a prime.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 18682965.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18682967) 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 71 ways as a sum of consecutive naturals, for example, 81471 + ... + 81699.

It is an arithmetic number, because the mean of its divisors is an integer number (539695).

Almost surely, 2^18682965 is an apocalyptic number.

18682965 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18682965 is an abundant number, since it is smaller than the sum of its proper divisors (20175075).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18682965 is a wasteful number, since it uses less digits than its factorization.

18682965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291 (or 281 counting only the distinct ones).

The product of its digits is 207360, while the sum is 45.

The square root of 18682965 is about 4322.3795529777. The cubic root of 18682965 is about 265.3476628303.

The spelling of 18682965 in words is "eighteen million, six hundred eighty-two thousand, nine hundred sixty-five".