1674680405987 has 2 divisors, whose sum is σ = 1674680405988. Its totient is φ = 1674680405986.

The previous prime is 1674680405939. The next prime is 1674680406017. The reversal of 1674680405987 is 7895040864761.

It is a strong prime.

It is an emirp because it is prime and its reverse (7895040864761) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1674680405987 - 2⁸ = 1674680405731 is a prime.

It is not a weakly prime, because it can be changed into another prime (1674680405687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 837340202993 + 837340202994.

It is an arithmetic number, because the mean of its divisors is an integer number (837340202994).

Almost surely, 2^{1674680405987} is an apocalyptic number.

1674680405987 is a deficient number, since it is larger than the sum of its proper divisors (1).

1674680405987 is an equidigital number, since it uses as much as digits as its factorization.

1674680405987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81285120, while the sum is 65.

The spelling of 1674680405987 in words is "one trillion, six hundred seventy-four billion, six hundred eighty million, four hundred five thousand, nine hundred eighty-seven".