1998148 has 24 divisors (see below), whose sum is σ = 3753792. Its totient is φ = 928224.

The previous prime is 1998133. The next prime is 1998169. The reversal of 1998148 is 8418991.

It is a super-3 number, since 3×1998148³ = 23933389719215453376, which contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1998148.

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, 3111 + ... + 3697.

It is an arithmetic number, because the mean of its divisors is an integer number (156408).

2^1998148 is an apocalyptic number.

It is an amenable number.

1998148 is a deficient number, since it is larger than the sum of its proper divisors (1755644).

1998148 is a wasteful number, since it uses less digits than its factorization.

1998148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 651 (or 649 counting only the distinct ones).

The product of its digits is 20736, while the sum is 40.

The square root of 1998148 is about 1413.5586298417. The cubic root of 1998148 is about 125.9532034163.

The spelling of 1998148 in words is "one million, nine hundred ninety-eight thousand, one hundred forty-eight".