1918323285 has 16 divisors (see below), whose sum is σ = 3098005056. Its totient is φ = 1013543168.

The previous prime is 1918323271. The next prime is 1918323317. The reversal of 1918323285 is 5823238191.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1918323285 - 2⁴ = 1918323269 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 596004 + ... + 599213.

It is an arithmetic number, because the mean of its divisors is an integer number (193625316).

Almost surely, 2^1918323285 is an apocalyptic number.

1918323285 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1918323285 is a deficient number, since it is larger than the sum of its proper divisors (1179681771).

1918323285 is a wasteful number, since it uses less digits than its factorization.

1918323285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1195332.

The product of its digits is 103680, while the sum is 42.

The square root of 1918323285 is about 43798.6676167209. The cubic root of 1918323285 is about 1242.5310953897.

The spelling of 1918323285 in words is "one billion, nine hundred eighteen million, three hundred twenty-three thousand, two hundred eighty-five".