18845485 has 16 divisors (see below), whose sum is σ = 23186880. Its totient is φ = 14699520.

The previous prime is 18845479. The next prime is 18845501. The reversal of 18845485 is 58454881.

It is not a de Polignac number, because 18845485 - 2⁷ = 18845357 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56770 + ... + 57100.

It is an arithmetic number, because the mean of its divisors is an integer number (1449180).

Almost surely, 2^18845485 is an apocalyptic number.

It is an amenable number.

18845485 is a deficient number, since it is larger than the sum of its proper divisors (4341395).

18845485 is a wasteful number, since it uses less digits than its factorization.

18845485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 588.

The product of its digits is 204800, while the sum is 43.

The square root of 18845485 is about 4341.1386755090. The cubic root of 18845485 is about 266.1148476119.

It can be divided in two parts, 188 and 45485, that multiplied together give a triangular number (8551180 = T₄₁₃₅).

The spelling of 18845485 in words is "eighteen million, eight hundred forty-five thousand, four hundred eighty-five".