1998367 has 12 divisors (see below), whose sum is σ = 2462400. Its totient is φ = 1611456.

The previous prime is 1998349. The next prime is 1998371. The reversal of 1998367 is 7638991.

It is not a de Polignac number, because 1998367 - 2¹⁹ = 1474079 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1998397) 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, 367 + ... + 2032.

It is an arithmetic number, because the mean of its divisors is an integer number (205200).

2^1998367 is an apocalyptic number.

1998367 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1998367 is a deficient number, since it is larger than the sum of its proper divisors (464033).

1998367 is a wasteful number, since it uses less digits than its factorization.

1998367 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2430 (or 2423 counting only the distinct ones).

The product of its digits is 81648, while the sum is 43.

The square root of 1998367 is about 1413.6360917860. The cubic root of 1998367 is about 125.9578048012.

The spelling of 1998367 in words is "one million, nine hundred ninety-eight thousand, three hundred sixty-seven".