18146545 has 8 divisors (see below), whose sum is σ = 21799296. Its totient is φ = 14501616.

The previous prime is 18146521. The next prime is 18146549. The reversal of 18146545 is 54564181.

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

It is a cyclic number.

It is not a de Polignac number, because 18146545 - 2¹⁹ = 17622257 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18146545.

It is not an unprimeable number, because it can be changed into a prime (18146549) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6424 + ... + 8806.

It is an arithmetic number, because the mean of its divisors is an integer number (2724912).

Almost surely, 2^18146545 is an apocalyptic number.

It is an amenable number.

18146545 is a deficient number, since it is larger than the sum of its proper divisors (3652751).

18146545 is a wasteful number, since it uses less digits than its factorization.

18146545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3911.

The product of its digits is 19200, while the sum is 34.

The square root of 18146545 is about 4259.8761719092. The cubic root of 18146545 is about 262.7834338376.

The spelling of 18146545 in words is "eighteen million, one hundred forty-six thousand, five hundred forty-five".