1674860364781 has 2 divisors, whose sum is σ = 1674860364782. Its totient is φ = 1674860364780.

The previous prime is 1674860364743. The next prime is 1674860364851. The reversal of 1674860364781 is 1874630684761.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1661433349156 + 13427015625 = 1288966^2 + 115875^2 .

It is a cyclic number.

It is not a de Polignac number, because 1674860364781 - 2²¹ = 1674858267629 is a prime.

It is a super-2 number, since 2×1674860364781² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1674860364581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 837430182390 + 837430182391.

It is an arithmetic number, because the mean of its divisors is an integer number (837430182391).

Almost surely, 2^{1674860364781} is an apocalyptic number.

It is an amenable number.

1674860364781 is a deficient number, since it is larger than the sum of its proper divisors (1).

1674860364781 is an equidigital number, since it uses as much as digits as its factorization.

1674860364781 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32514048, while the sum is 61.

The spelling of 1674860364781 in words is "one trillion, six hundred seventy-four billion, eight hundred sixty million, three hundred sixty-four thousand, seven hundred eighty-one".