18542965 has 16 divisors (see below), whose sum is σ = 25504128. Its totient is φ = 12678336.

The previous prime is 18542939. The next prime is 18542969. The reversal of 18542965 is 56924581.

It is a cyclic number.

It is not a de Polignac number, because 18542965 - 2⁷ = 18542837 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 (18542969) 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, 17799 + ... + 18811.

It is an arithmetic number, because the mean of its divisors is an integer number (1594008).

Almost surely, 2^18542965 is an apocalyptic number.

It is an amenable number.

18542965 is a deficient number, since it is larger than the sum of its proper divisors (6961163).

18542965 is a wasteful number, since it uses less digits than its factorization.

18542965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1548.

The product of its digits is 86400, while the sum is 40.

The square root of 18542965 is about 4306.1543167889. The cubic root of 18542965 is about 264.6832099148.

The spelling of 18542965 in words is "eighteen million, five hundred forty-two thousand, nine hundred sixty-five".