1673280003 has 4 divisors (see below), whose sum is σ = 2231040008. Its totient is φ = 1115520000.

The previous prime is 1673279989. The next prime is 1673280053. The reversal of 1673280003 is 3000823761.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1673280003 - 2⁸ = 1673279747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1673280053) 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, 278879998 + ... + 278880003.

It is an arithmetic number, because the mean of its divisors is an integer number (557760002).

Almost surely, 2^1673280003 is an apocalyptic number.

1673280003 is a deficient number, since it is larger than the sum of its proper divisors (557760005).

1673280003 is an equidigital number, since it uses as much as digits as its factorization.

1673280003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 557760004.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 1673280003 is about 40905.7453544120. The cubic root of 1673280003 is about 1187.1972273046.

The spelling of 1673280003 in words is "one billion, six hundred seventy-three million, two hundred eighty thousand, three".