1853801868 has 12 divisors (see below), whose sum is σ = 4325537720. Its totient is φ = 617933952.

The previous prime is 1853801867. The next prime is 1853801897. The reversal of 1853801868 is 8681083581.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (1853801867) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77241733 + ... + 77241756.

Almost surely, 2^1853801868 is an apocalyptic number.

It is an amenable number.

1853801868 is an abundant number, since it is smaller than the sum of its proper divisors (2471735852).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1853801868 is a wasteful number, since it uses less digits than its factorization.

1853801868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154483496 (or 154483494 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 48.

The square root of 1853801868 is about 43055.7994699901. The cubic root of 1853801868 is about 1228.4413835954.

The spelling of 1853801868 in words is "one billion, eight hundred fifty-three million, eight hundred one thousand, eight hundred sixty-eight".