18634960 has 20 divisors (see below), whose sum is σ = 43326468. Its totient is φ = 7453952.

The previous prime is 18634933. The next prime is 18634963. The reversal of 18634960 is 6943681.

It can be written as a sum of positive squares in 2 ways, for example, as 5875776 + 12759184 = 2424^2 + 3572^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18634963) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 116389 + ... + 116548.

Almost surely, 2^18634960 is an apocalyptic number.

18634960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18634960 is an abundant number, since it is smaller than the sum of its proper divisors (24691508).

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

18634960 is a wasteful number, since it uses less digits than its factorization.

18634960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232950 (or 232944 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 18634960 is about 4316.8229057954. The cubic root of 18634960 is about 265.1202017882.

The spelling of 18634960 in words is "eighteen million, six hundred thirty-four thousand, nine hundred sixty".