2831989493 has 2 divisors, whose sum is σ = 2831989494. Its totient is φ = 2831989492.

The previous prime is 2831989487. The next prime is 2831989541. The reversal of 2831989493 is 3949891382.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2526369169 + 305620324 = 50263^2 + 17482^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2831989493 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2831989423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1415994746 + 1415994747.

It is an arithmetic number, because the mean of its divisors is an integer number (1415994747).

Almost surely, 2^2831989493 is an apocalyptic number.

It is an amenable number.

2831989493 is a deficient number, since it is larger than the sum of its proper divisors (1).

2831989493 is an equidigital number, since it uses as much as digits as its factorization.

2831989493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3359232, while the sum is 56.

The square root of 2831989493 is about 53216.4400631985. The cubic root of 2831989493 is about 1414.8070413253.

The spelling of 2831989493 in words is "two billion, eight hundred thirty-one million, nine hundred eighty-nine thousand, four hundred ninety-three".