1931982434849 has 2 divisors, whose sum is σ = 1931982434850. Its totient is φ = 1931982434848.

The previous prime is 1931982434813. The next prime is 1931982434887. The reversal of 1931982434849 is 9484342891391.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 966401065249 + 965581369600 = 983057^2 + 982640^2 .

It is a cyclic number.

It is not a de Polignac number, because 1931982434849 - 2⁸ = 1931982434593 is a prime.

It is a super-2 number, since 2×1931982434849² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1931982434549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 965991217424 + 965991217425.

It is an arithmetic number, because the mean of its divisors is an integer number (965991217425).

Almost surely, 2^{1931982434849} is an apocalyptic number.

It is an amenable number.

1931982434849 is a deficient number, since it is larger than the sum of its proper divisors (1).

1931982434849 is an equidigital number, since it uses as much as digits as its factorization.

1931982434849 is an evil number, because the sum of its binary digits is even.

The product of its digits is 53747712, while the sum is 65.

The spelling of 1931982434849 in words is "one trillion, nine hundred thirty-one billion, nine hundred eighty-two million, four hundred thirty-four thousand, eight hundred forty-nine".