2681634919 has 2 divisors, whose sum is σ = 2681634920. Its totient is φ = 2681634918.

The previous prime is 2681634911. The next prime is 2681634931. The reversal of 2681634919 is 9194361862.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2681634919 - 2³ = 2681634911 is a prime.

It is a super-2 number, since 2×2681634919² = 14382331677600273122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2681634911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1340817459 + 1340817460.

It is an arithmetic number, because the mean of its divisors is an integer number (1340817460).

Almost surely, 2^2681634919 is an apocalyptic number.

2681634919 is a deficient number, since it is larger than the sum of its proper divisors (1).

2681634919 is an equidigital number, since it uses as much as digits as its factorization.

2681634919 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 559872, while the sum is 49.

The square root of 2681634919 is about 51784.5046225220. The cubic root of 2681634919 is about 1389.3123108300.

The spelling of 2681634919 in words is "two billion, six hundred eighty-one million, six hundred thirty-four thousand, nine hundred nineteen".