1980498 has 16 divisors (see below), whose sum is σ = 4265856. Its totient is φ = 609360.

The previous prime is 1980491. The next prime is 1980521. The reversal of 1980498 is 8940891.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1980491) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12618 + ... + 12773.

It is an arithmetic number, because the mean of its divisors is an integer number (266616).

2^1980498 is an apocalyptic number.

1980498 is an abundant number, since it is smaller than the sum of its proper divisors (2285358).

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

1980498 is a wasteful number, since it uses less digits than its factorization.

1980498 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25409.

The product of its (nonzero) digits is 20736, while the sum is 39.

The square root of 1980498 is about 1407.3016734162. The cubic root of 1980498 is about 125.5812503284.

The spelling of 1980498 in words is "one million, nine hundred eighty thousand, four hundred ninety-eight".