1868533685 has 16 divisors (see below), whose sum is σ = 2345621760. Its totient is φ = 1426233600.

The previous prime is 1868533679. The next prime is 1868533741. The reversal of 1868533685 is 5863358681.

It is not a de Polignac number, because 1868533685 - 2⁶ = 1868533621 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, 25856 + ... + 66374.

It is an arithmetic number, because the mean of its divisors is an integer number (146601360).

Almost surely, 2^1868533685 is an apocalyptic number.

It is an amenable number.

1868533685 is a deficient number, since it is larger than the sum of its proper divisors (477088075).

1868533685 is a wasteful number, since it uses less digits than its factorization.

1868533685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40948.

The product of its digits is 4147200, while the sum is 53.

The square root of 1868533685 is about 43226.5391281791. The cubic root of 1868533685 is about 1231.6868663358.

The spelling of 1868533685 in words is "one billion, eight hundred sixty-eight million, five hundred thirty-three thousand, six hundred eighty-five".