18465745 has 8 divisors (see below), whose sum is σ = 22182120. Its totient is φ = 14757120.

The previous prime is 18465679. The next prime is 18465767. The reversal of 18465745 is 54756481.

It can be written as a sum of positive squares in 4 ways, for example, as 859329 + 17606416 = 927^2 + 4196^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18465745 - 2⁷ = 18465617 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18465698 and 18465707.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7465 + ... + 9625.

It is an arithmetic number, because the mean of its divisors is an integer number (2772765).

Almost surely, 2^18465745 is an apocalyptic number.

It is an amenable number.

18465745 is a deficient number, since it is larger than the sum of its proper divisors (3716375).

18465745 is a wasteful number, since it uses less digits than its factorization.

18465745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3875.

The product of its digits is 134400, while the sum is 40.

The square root of 18465745 is about 4297.1787256292. The cubic root of 18465745 is about 264.3152846665.

The spelling of 18465745 in words is "eighteen million, four hundred sixty-five thousand, seven hundred forty-five".