1673330401 has 4 divisors (see below), whose sum is σ = 1673430804. Its totient is φ = 1673230000.

The previous prime is 1673330389. The next prime is 1673330441. The reversal of 1673330401 is 1040333761.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 866713600 + 806616801 = 29440^2 + 28401^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1673330401 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1673330401.

It is not an unprimeable number, because it can be changed into a prime (1673330441) 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, 18550 + ... + 60751.

It is an arithmetic number, because the mean of its divisors is an integer number (418357701).

Almost surely, 2^1673330401 is an apocalyptic number.

It is an amenable number.

1673330401 is a deficient number, since it is larger than the sum of its proper divisors (100403).

1673330401 is an equidigital number, since it uses as much as digits as its factorization.

1673330401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100402.

The product of its (nonzero) digits is 4536, while the sum is 28.

The square root of 1673330401 is about 40906.3613757078. The cubic root of 1673330401 is about 1187.2091463628.

The spelling of 1673330401 in words is "one billion, six hundred seventy-three million, three hundred thirty thousand, four hundred one".