1675867469809 has 9 divisors (see below), whose sum is σ = 1814714951169. Its totient is φ = 1546939052880.

The previous prime is 1675867469803. The next prime is 1675867469813. The reversal of 1675867469809 is 9089647685761.

The square root of 1675867469809 is 1294553.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 582498225 + 1675284971584 = 24135^2 + 1294328^2 .

It is not a de Polignac number, because 1675867469809 - 2¹¹ = 1675867467761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1675867469803) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 16779399 + ... + 16878979.

Almost surely, 2^{1675867469809} is an apocalyptic number.

1675867469809 is the 1294553-rd square number.

1675867469809 is the 647277-th centered octagonal number.

It is an amenable number.

1675867469809 is a deficient number, since it is larger than the sum of its proper divisors (138847481360).

1675867469809 is an frugal number, since it uses more digits than its factorization.

1675867469809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199188 (or 99594 counting only the distinct ones).

The product of its (nonzero) digits is 1097349120, while the sum is 76.

The spelling of 1675867469809 in words is "one trillion, six hundred seventy-five billion, eight hundred sixty-seven million, four hundred sixty-nine thousand, eight hundred nine".