1868913 has 12 divisors (see below), whose sum is σ = 2799888. Its totient is φ = 1245780.

The previous prime is 1868879. The next prime is 1868917. The reversal of 1868913 is 3198681.

It is not a de Polignac number, because 1868913 - 2¹³ = 1860721 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1868917) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3603 + ... + 4088.

It is an arithmetic number, because the mean of its divisors is an integer number (233324).

2^1868913 is an apocalyptic number.

It is an amenable number.

1868913 is a deficient number, since it is larger than the sum of its proper divisors (930975).

1868913 is an frugal number, since it uses more digits than its factorization.

1868913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7706 (or 7694 counting only the distinct ones).

The product of its digits is 10368, while the sum is 36.

The square root of 1868913 is about 1367.0819287812. The cubic root of 1868913 is about 123.1770205426.

The spelling of 1868913 in words is "one million, eight hundred sixty-eight thousand, nine hundred thirteen".