1985498 has 16 divisors (see below), whose sum is σ = 3291840. Its totient is φ = 893376.

The previous prime is 1985491. The next prime is 1985509. The reversal of 1985498 is 8945891.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1985491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 488 + ... + 2051.

It is an arithmetic number, because the mean of its divisors is an integer number (205740).

2^1985498 is an apocalyptic number.

1985498 is a deficient number, since it is larger than the sum of its proper divisors (1306342).

1985498 is a wasteful number, since it uses less digits than its factorization.

1985498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2581.

The product of its digits is 103680, while the sum is 44.

The square root of 1985498 is about 1409.0770028639. The cubic root of 1985498 is about 125.6868430604.

The spelling of 1985498 in words is "one million, nine hundred eighty-five thousand, four hundred ninety-eight".