1873998 has 48 divisors (see below), whose sum is σ = 4717440. Its totient is φ = 526608.

The previous prime is 1873979. The next prime is 1874003. The reversal of 1873998 is 8993781.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13413 + ... + 13551.

It is an arithmetic number, because the mean of its divisors is an integer number (98280).

2^1873998 is an apocalyptic number.

1873998 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1873998, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2358720).

1873998 is an abundant number, since it is smaller than the sum of its proper divisors (2843442).

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

1873998 is a wasteful number, since it uses less digits than its factorization.

1873998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261 (or 258 counting only the distinct ones).

The product of its digits is 108864, while the sum is 45.

The square root of 1873998 is about 1368.9404662000. The cubic root of 1873998 is about 123.2886340737.

The spelling of 1873998 in words is "one million, eight hundred seventy-three thousand, nine hundred ninety-eight".