4189915493609 has 2 divisors, whose sum is σ = 4189915493610. Its totient is φ = 4189915493608.

The previous prime is 4189915493591. The next prime is 4189915493629. The reversal of 4189915493609 is 9063945199814.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3214838242009 + 975077251600 = 1792997^2 + 987460^2 .

It is a cyclic number.

It is not a de Polignac number, because 4189915493609 - 2²⁰ = 4189914445033 is a prime.

It is not a weakly prime, because it can be changed into another prime (4189915493629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2094957746804 + 2094957746805.

It is an arithmetic number, because the mean of its divisors is an integer number (2094957746805).

Almost surely, 2^{4189915493609} is an apocalyptic number.

It is an amenable number.

4189915493609 is a deficient number, since it is larger than the sum of its proper divisors (1).

4189915493609 is an equidigital number, since it uses as much as digits as its factorization.

4189915493609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 75582720, while the sum is 68.

The spelling of 4189915493609 in words is "four trillion, one hundred eighty-nine billion, nine hundred fifteen million, four hundred ninety-three thousand, six hundred nine".