18465005 has 16 divisors (see below), whose sum is σ = 24258864. Its totient is φ = 13409280.

The previous prime is 18465001. The next prime is 18465061. The reversal of 18465005 is 50056481.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 9205156 + 9259849 = 3034^2 + 3043^2 .

It is not a de Polignac number, because 18465005 - 2² = 18465001 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 (18465001) 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, 1637 + ... + 6293.

It is an arithmetic number, because the mean of its divisors is an integer number (1516179).

Almost surely, 2^18465005 is an apocalyptic number.

It is an amenable number.

18465005 is a deficient number, since it is larger than the sum of its proper divisors (5793859).

18465005 is a wasteful number, since it uses less digits than its factorization.

18465005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4736.

The product of its (nonzero) digits is 4800, while the sum is 29.

The square root of 18465005 is about 4297.0926217618. The cubic root of 18465005 is about 264.3117538780.

The spelling of 18465005 in words is "eighteen million, four hundred sixty-five thousand, five".