1901868 has 12 divisors (see below), whose sum is σ = 4437720. Its totient is φ = 633952.

The previous prime is 1901857. The next prime is 1901891. The reversal of 1901868 is 8681091.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79233 + ... + 79256.

It is an arithmetic number, because the mean of its divisors is an integer number (369810).

2^1901868 is an apocalyptic number.

It is an amenable number.

1901868 is an abundant number, since it is smaller than the sum of its proper divisors (2535852).

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

1901868 is a wasteful number, since it uses less digits than its factorization.

1901868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158496 (or 158494 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 33.

The square root of 1901868 is about 1379.0823035628. The cubic root of 1901868 is about 123.8968097459.

The spelling of 1901868 in words is "one million, nine hundred one thousand, eight hundred sixty-eight".