1674685609 has 2 divisors, whose sum is σ = 1674685610. Its totient is φ = 1674685608.

The previous prime is 1674685577. The next prime is 1674685633. The reversal of 1674685609 is 9065864761.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1521000000 + 153685609 = 39000^2 + 12397^2 .

It is a cyclic number.

It is not a de Polignac number, because 1674685609 - 2⁵ = 1674685577 is a prime.

It is not a weakly prime, because it can be changed into another prime (1674685409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 837342804 + 837342805.

It is an arithmetic number, because the mean of its divisors is an integer number (837342805).

Almost surely, 2^1674685609 is an apocalyptic number.

It is an amenable number.

1674685609 is a deficient number, since it is larger than the sum of its proper divisors (1).

1674685609 is an equidigital number, since it uses as much as digits as its factorization.

1674685609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2177280, while the sum is 52.

The square root of 1674685609 is about 40922.9227817369. The cubic root of 1674685609 is about 1187.5295615023.

The spelling of 1674685609 in words is "one billion, six hundred seventy-four million, six hundred eighty-five thousand, six hundred nine".