1980348789 has 16 divisors (see below), whose sum is σ = 2789033984. Its totient is φ = 1247929200.

The previous prime is 1980348787. The next prime is 1980348793. The reversal of 1980348789 is 9878430891.

It is not a de Polignac number, because 1980348789 - 2¹ = 1980348787 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1980348787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 243607 + ... + 251604.

It is an arithmetic number, because the mean of its divisors is an integer number (174314624).

Almost surely, 2^1980348789 is an apocalyptic number.

It is an amenable number.

1980348789 is a deficient number, since it is larger than the sum of its proper divisors (808685195).

1980348789 is a wasteful number, since it uses less digits than its factorization.

1980348789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495288.

The product of its (nonzero) digits is 3483648, while the sum is 57.

The square root of 1980348789 is about 44501.1099749209. The cubic root of 1980348789 is about 1255.7809647948.

The spelling of 1980348789 in words is "one billion, nine hundred eighty million, three hundred forty-eight thousand, seven hundred eighty-nine".