1864745218 has 16 divisors (see below), whose sum is σ = 3208867200. Its totient is φ = 796136256.

The previous prime is 1864745189. The next prime is 1864745219. The reversal of 1864745218 is 8125474681.

It is not an unprimeable number, because it can be changed into a prime (1864745219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 249543 + ... + 256906.

It is an arithmetic number, because the mean of its divisors is an integer number (200554200).

Almost surely, 2^1864745218 is an apocalyptic number.

1864745218 is a deficient number, since it is larger than the sum of its proper divisors (1344121982).

1864745218 is a wasteful number, since it uses less digits than its factorization.

1864745218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506721.

The product of its digits is 430080, while the sum is 46.

The square root of 1864745218 is about 43182.6958167273. The cubic root of 1864745218 is about 1230.8538847968.

The spelling of 1864745218 in words is "one billion, eight hundred sixty-four million, seven hundred forty-five thousand, two hundred eighteen".