1674860364581 has 2 divisors, whose sum is σ = 1674860364582. Its totient is φ = 1674860364580.

The previous prime is 1674860364479. The next prime is 1674860364689. The reversal of 1674860364581 is 1854630684761.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1629876075556 + 44984289025 = 1276666^2 + 212095^2 .

It is a cyclic number.

It is not a de Polignac number, because 1674860364581 - 2²⁶ = 1674793255717 is a prime.

It is a super-2 number, since 2×1674860364581² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1674860364581.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1674860364781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 837430182290 + 837430182291.

It is an arithmetic number, because the mean of its divisors is an integer number (837430182291).

Almost surely, 2^{1674860364581} is an apocalyptic number.

It is an amenable number.

1674860364581 is a deficient number, since it is larger than the sum of its proper divisors (1).

1674860364581 is an equidigital number, since it uses as much as digits as its factorization.

1674860364581 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23224320, while the sum is 59.

The spelling of 1674860364581 in words is "one trillion, six hundred seventy-four billion, eight hundred sixty million, three hundred sixty-four thousand, five hundred eighty-one".