1984581941 has 4 divisors (see below), whose sum is σ = 1984699584. Its totient is φ = 1984464300.

The previous prime is 1984581919. The next prime is 1984581943. The reversal of 1984581941 is 1491854891.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1984581941 - 2⁶ = 1984581877 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1984581941.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1984581943) 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, 28205 + ... + 69026.

It is an arithmetic number, because the mean of its divisors is an integer number (496174896).

Almost surely, 2^1984581941 is an apocalyptic number.

It is an amenable number.

1984581941 is a deficient number, since it is larger than the sum of its proper divisors (117643).

1984581941 is an equidigital number, since it uses as much as digits as its factorization.

1984581941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117642.

The product of its digits is 414720, while the sum is 50.

The square root of 1984581941 is about 44548.6469042551. The cubic root of 1984581941 is about 1256.6751050083.

The spelling of 1984581941 in words is "one billion, nine hundred eighty-four million, five hundred eighty-one thousand, nine hundred forty-one".