1868398 has 16 divisors (see below), whose sum is σ = 3220704. Its totient is φ = 796320.

The previous prime is 1868387. The next prime is 1868407. The reversal of 1868398 is 8938681.

It is a happy number.

It is a super-2 number, since 2×1868398² = 6981822172808, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4228 + ... + 4648.

It is an arithmetic number, because the mean of its divisors is an integer number (201294).

2^1868398 is an apocalyptic number.

1868398 is a deficient number, since it is larger than the sum of its proper divisors (1352306).

1868398 is a wasteful number, since it uses less digits than its factorization.

1868398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 747.

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

The square root of 1868398 is about 1366.8935584017. The cubic root of 1868398 is about 123.1657052320.

It can be divided in two parts, 18683 and 98, that added together give a palindrome (18781).

The spelling of 1868398 in words is "one million, eight hundred sixty-eight thousand, three hundred ninety-eight".