1868893 has 8 divisors (see below), whose sum is σ = 2024568. Its totient is φ = 1714944.

The previous prime is 1868879. The next prime is 1868917. The reversal of 1868893 is 3988681.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 131769 + 1737124 = 363^2 + 1318^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1868893 - 2⁹ = 1868381 is a prime.

It is a super-2 number, since 2×1868893² = 6985522090898, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1868813) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2721 + ... + 3337.

It is an arithmetic number, because the mean of its divisors is an integer number (253071).

2^1868893 is an apocalyptic number.

1868893 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1868893 is a deficient number, since it is larger than the sum of its proper divisors (155675).

1868893 is a wasteful number, since it uses less digits than its factorization.

1868893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 863.

The product of its digits is 82944, while the sum is 43.

The square root of 1868893 is about 1367.0746139110. The cubic root of 1868893 is about 123.1765811519.

It can be divided in two parts, 18688 and 93, that added together give a palindrome (18781).

The spelling of 1868893 in words is "one million, eight hundred sixty-eight thousand, eight hundred ninety-three".