1980481798 has 8 divisors (see below), whose sum is σ = 2972709000. Its totient is φ = 989578800.

The previous prime is 1980481771. The next prime is 1980481799. The reversal of 1980481798 is 8971840891.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1980481799) 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 3 ways as a sum of consecutive naturals, for example, 327303 + ... + 333298.

It is an arithmetic number, because the mean of its divisors is an integer number (371588625).

Almost surely, 2^1980481798 is an apocalyptic number.

1980481798 is a deficient number, since it is larger than the sum of its proper divisors (992227202).

1980481798 is a wasteful number, since it uses less digits than its factorization.

1980481798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 662102.

The product of its (nonzero) digits is 1161216, while the sum is 55.

The square root of 1980481798 is about 44502.6043956980. The cubic root of 1980481798 is about 1255.8090787701.

The spelling of 1980481798 in words is "one billion, nine hundred eighty million, four hundred eighty-one thousand, seven hundred ninety-eight".