1673505265 has 12 divisors (see below), whose sum is σ = 2051856756. Its totient is φ = 1310310368.

The previous prime is 1673505203. The next prime is 1673505283. The reversal of 1673505265 is 5625053761.

It can be written as a sum of positive squares in 2 ways, for example, as 1289384464 + 384120801 = 35908^2 + 19599^2 .

It is not a de Polignac number, because 1673505265 - 2¹⁹ = 1672980977 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 64714 + ... + 86803.

It is an arithmetic number, because the mean of its divisors is an integer number (170988063).

Almost surely, 2^1673505265 is an apocalyptic number.

It is an amenable number.

1673505265 is a deficient number, since it is larger than the sum of its proper divisors (378351491).

1673505265 is an equidigital number, since it uses as much as digits as its factorization.

1673505265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151616 (or 151569 counting only the distinct ones).

The product of its (nonzero) digits is 189000, while the sum is 40.

The square root of 1673505265 is about 40908.4986891477. The cubic root of 1673505265 is about 1187.2504996044.

The spelling of 1673505265 in words is "one billion, six hundred seventy-three million, five hundred five thousand, two hundred sixty-five".