1984020481 has 2 divisors, whose sum is σ = 1984020482. Its totient is φ = 1984020480.

The previous prime is 1984020469. The next prime is 1984020487. The reversal of 1984020481 is 1840204891.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1491890625 + 492129856 = 38625^2 + 22184^2 .

It is a cyclic number.

It is not a de Polignac number, because 1984020481 - 2⁵ = 1984020449 is a prime.

It is a super-2 number, since 2×1984020481² = 7872674538054942722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1984020481.

It is not a weakly prime, because it can be changed into another prime (1984020487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 992010240 + 992010241.

It is an arithmetic number, because the mean of its divisors is an integer number (992010241).

Almost surely, 2^1984020481 is an apocalyptic number.

It is an amenable number.

1984020481 is a deficient number, since it is larger than the sum of its proper divisors (1).

1984020481 is an equidigital number, since it uses as much as digits as its factorization.

1984020481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18432, while the sum is 37.

The square root of 1984020481 is about 44542.3448080588. The cubic root of 1984020481 is about 1256.5565847735.

The spelling of 1984020481 in words is "one billion, nine hundred eighty-four million, twenty thousand, four hundred eighty-one".