18965285 has 16 divisors (see below), whose sum is σ = 24204096. Its totient is φ = 14216448.

The previous prime is 18965281. The next prime is 18965341. The reversal of 18965285 is 58256981.

It is a cyclic number.

It is not a de Polignac number, because 18965285 - 2² = 18965281 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18965281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29174 + ... + 29816.

It is an arithmetic number, because the mean of its divisors is an integer number (1512756).

Almost surely, 2^18965285 is an apocalyptic number.

It is an amenable number.

18965285 is a deficient number, since it is larger than the sum of its proper divisors (5238811).

18965285 is a wasteful number, since it uses less digits than its factorization.

18965285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1012.

The product of its digits is 172800, while the sum is 44.

The square root of 18965285 is about 4354.9150393550. The cubic root of 18965285 is about 266.6775507710.

The spelling of 18965285 in words is "eighteen million, nine hundred sixty-five thousand, two hundred eighty-five".