3688879919 has 2 divisors, whose sum is σ = 3688879920. Its totient is φ = 3688879918.

The previous prime is 3688879889. The next prime is 3688879939. The reversal of 3688879919 is 9199788863.

It is a strong prime.

It is an emirp because it is prime and its reverse (9199788863) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3688879919 - 2²⁸ = 3420444463 is a prime.

It is a super-2 number, since 2×3688879919² = 27215670113602893122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3688879939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1844439959 + 1844439960.

It is an arithmetic number, because the mean of its divisors is an integer number (1844439960).

Almost surely, 2^3688879919 is an apocalyptic number.

3688879919 is a deficient number, since it is larger than the sum of its proper divisors (1).

3688879919 is an equidigital number, since it uses as much as digits as its factorization.

3688879919 is an evil number, because the sum of its binary digits is even.

The product of its digits is 47029248, while the sum is 68.

The square root of 3688879919 is about 60736.1500179259. The cubic root of 3688879919 is about 1545.1293404215.

The spelling of 3688879919 in words is "three billion, six hundred eighty-eight million, eight hundred seventy-nine thousand, nine hundred nineteen".