18896545 has 20 divisors (see below), whose sum is σ = 24760980. Its totient is φ = 13827744.

The previous prime is 18896543. The next prime is 18896587. The reversal of 18896545 is 54569881.

It can be written as a sum of positive squares in 2 ways, for example, as 8340544 + 10556001 = 2888^2 + 3249^2 .

It is not a de Polignac number, because 18896545 - 2¹ = 18896543 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18896495 and 18896504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18896543) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 651591 + ... + 651619.

It is an arithmetic number, because the mean of its divisors is an integer number (1238049).

Almost surely, 2^18896545 is an apocalyptic number.

It is an amenable number.

18896545 is a deficient number, since it is larger than the sum of its proper divisors (5864435).

18896545 is an frugal number, since it uses more digits than its factorization.

18896545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110 (or 53 counting only the distinct ones).

The product of its digits is 345600, while the sum is 46.

The square root of 18896545 is about 4347.0156429440. The cubic root of 18896545 is about 266.3549682726.

The spelling of 18896545 in words is "eighteen million, eight hundred ninety-six thousand, five hundred forty-five".