18485145 has 64 divisors (see below), whose sum is σ = 38830080. Its totient is φ = 8164800.

The previous prime is 18485143. The next prime is 18485149. The reversal of 18485145 is 54158481.

It is not a de Polignac number, because 18485145 - 2¹ = 18485143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18485143) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 28980 + ... + 29610.

It is an arithmetic number, because the mean of its divisors is an integer number (606720).

Almost surely, 2^18485145 is an apocalyptic number.

18485145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18485145 is an abundant number, since it is smaller than the sum of its proper divisors (20344935).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18485145 is a wasteful number, since it uses less digits than its factorization.

18485145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 683 (or 677 counting only the distinct ones).

The product of its digits is 25600, while the sum is 36.

The square root of 18485145 is about 4299.4354280533. The cubic root of 18485145 is about 264.4078149499.

The spelling of 18485145 in words is "eighteen million, four hundred eighty-five thousand, one hundred forty-five".