1983898 has 8 divisors (see below), whose sum is σ = 3400992. Its totient is φ = 850236.

The previous prime is 1983889. The next prime is 1983913. The reversal of 1983898 is 8983891.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70840 + ... + 70867.

It is an arithmetic number, because the mean of its divisors is an integer number (425124).

2^1983898 is an apocalyptic number.

1983898 is a deficient number, since it is larger than the sum of its proper divisors (1417094).

1983898 is a wasteful number, since it uses less digits than its factorization.

1983898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141716.

The product of its digits is 124416, while the sum is 46.

The square root of 1983898 is about 1408.5091409004. The cubic root of 1983898 is about 125.6530726930.

It can be divided in two parts, 198 and 3898, that added together give a 12-th power (4096 = 2¹²).

The spelling of 1983898 in words is "one million, nine hundred eighty-three thousand, eight hundred ninety-eight".