1980354603 has 4 divisors (see below), whose sum is σ = 2640472808. Its totient is φ = 1320236400.

The previous prime is 1980354601. The next prime is 1980354611. The reversal of 1980354603 is 3064530891.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1980354603 - 2¹ = 1980354601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1980354601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 330059098 + ... + 330059103.

It is an arithmetic number, because the mean of its divisors is an integer number (660118202).

Almost surely, 2^1980354603 is an apocalyptic number.

1980354603 is a deficient number, since it is larger than the sum of its proper divisors (660118205).

1980354603 is an equidigital number, since it uses as much as digits as its factorization.

1980354603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660118204.

The product of its (nonzero) digits is 77760, while the sum is 39.

The square root of 1980354603 is about 44501.1752990862. The cubic root of 1980354603 is about 1255.7821937203.

The spelling of 1980354603 in words is "one billion, nine hundred eighty million, three hundred fifty-four thousand, six hundred three".