3668431187 has 2 divisors, whose sum is σ = 3668431188. Its totient is φ = 3668431186.

The previous prime is 3668431181. The next prime is 3668431189. The reversal of 3668431187 is 7811348663.

It is a strong prime.

It is an emirp because it is prime and its reverse (7811348663) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3668431187 - 2²⁰ = 3667382611 is a prime.

Together with 3668431189, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (3668431181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1834215593 + 1834215594.

It is an arithmetic number, because the mean of its divisors is an integer number (1834215594).

Almost surely, 2^3668431187 is an apocalyptic number.

3668431187 is a deficient number, since it is larger than the sum of its proper divisors (1).

3668431187 is an equidigital number, since it uses as much as digits as its factorization.

3668431187 is an evil number, because the sum of its binary digits is even.

The product of its digits is 580608, while the sum is 47.

The square root of 3668431187 is about 60567.5753765990. The cubic root of 3668431187 is about 1542.2689872040.

The spelling of 3668431187 in words is "three billion, six hundred sixty-eight million, four hundred thirty-one thousand, one hundred eighty-seven".