3912173180849 has 2 divisors, whose sum is σ = 3912173180850. Its totient is φ = 3912173180848.

The previous prime is 3912173180819. The next prime is 3912173180983. The reversal of 3912173180849 is 9480813712193.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3772016540224 + 140156640625 = 1942168^2 + 374375^2 .

It is a cyclic number.

It is not a de Polignac number, because 3912173180849 - 2⁸ = 3912173180593 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3912173180794 and 3912173180803.

It is not a weakly prime, because it can be changed into another prime (3912173180819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1956086590424 + 1956086590425.

It is an arithmetic number, because the mean of its divisors is an integer number (1956086590425).

Almost surely, 2^{3912173180849} is an apocalyptic number.

It is an amenable number.

3912173180849 is a deficient number, since it is larger than the sum of its proper divisors (1).

3912173180849 is an equidigital number, since it uses as much as digits as its factorization.

3912173180849 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2612736, while the sum is 56.

The spelling of 3912173180849 in words is "three trillion, nine hundred twelve billion, one hundred seventy-three million, one hundred eighty thousand, eight hundred forty-nine".