1984530061 has 2 divisors, whose sum is σ = 1984530062. Its totient is φ = 1984530060.

The previous prime is 1984529909. The next prime is 1984530089. The reversal of 1984530061 is 1600354891.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1776622500 + 207907561 = 42150^2 + 14419^2 .

It is a cyclic number.

It is not a de Polignac number, because 1984530061 - 2²¹ = 1982432909 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1984530061.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1984630061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 992265030 + 992265031.

It is an arithmetic number, because the mean of its divisors is an integer number (992265031).

Almost surely, 2^1984530061 is an apocalyptic number.

It is an amenable number.

1984530061 is a deficient number, since it is larger than the sum of its proper divisors (1).

1984530061 is an equidigital number, since it uses as much as digits as its factorization.

1984530061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 1984530061 is about 44548.0646156486. The cubic root of 1984530061 is about 1256.6641544447.

The spelling of 1984530061 in words is "one billion, nine hundred eighty-four million, five hundred thirty thousand, sixty-one".