1887998 has 8 divisors (see below), whose sum is σ = 3236592. Its totient is φ = 809136.

The previous prime is 1887967. The next prime is 1888031. The reversal of 1887998 is 8997881.

It is a happy number.

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

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67415 + ... + 67442.

It is an arithmetic number, because the mean of its divisors is an integer number (404574).

2^1887998 is an apocalyptic number.

1887998 is a deficient number, since it is larger than the sum of its proper divisors (1348594).

1887998 is a wasteful number, since it uses less digits than its factorization.

1887998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134866.

The product of its digits is 290304, while the sum is 50.

The square root of 1887998 is about 1374.0443952071. The cubic root of 1887998 is about 123.5948884750.

The spelling of 1887998 in words is "one million, eight hundred eighty-seven thousand, nine hundred ninety-eight".