1673545001 has 4 divisors (see below), whose sum is σ = 1674059904. Its totient is φ = 1673030100.

The previous prime is 1673544997. The next prime is 1673545051. The reversal of 1673545001 is 1005453761.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1673545001 - 2² = 1673544997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1673545051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 252545 + ... + 259086.

It is an arithmetic number, because the mean of its divisors is an integer number (418514976).

Almost surely, 2^1673545001 is an apocalyptic number.

It is an amenable number.

1673545001 is a deficient number, since it is larger than the sum of its proper divisors (514903).

1673545001 is an equidigital number, since it uses as much as digits as its factorization.

1673545001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 514902.

The product of its (nonzero) digits is 12600, while the sum is 32.

The square root of 1673545001 is about 40908.9843555178. The cubic root of 1673545001 is about 1187.2598962908.

Adding to 1673545001 its reverse (1005453761), we get a palindrome (2678998762).

The spelling of 1673545001 in words is "one billion, six hundred seventy-three million, five hundred forty-five thousand, one".