1672443673 has 4 divisors (see below), whose sum is σ = 1703999268. Its totient is φ = 1640888080.

The previous prime is 1672443653. The next prime is 1672443679. The reversal of 1672443673 is 3763442761.

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

It can be written as a sum of positive squares in 2 ways, for example, as 835903744 + 836539929 = 28912^2 + 28923^2 .

It is a cyclic number.

It is not a de Polignac number, because 1672443673 - 2¹⁷ = 1672312601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1672443679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15777718 + ... + 15777823.

It is an arithmetic number, because the mean of its divisors is an integer number (425999817).

Almost surely, 2^1672443673 is an apocalyptic number.

It is an amenable number.

1672443673 is a deficient number, since it is larger than the sum of its proper divisors (31555595).

1672443673 is an equidigital number, since it uses as much as digits as its factorization.

1672443673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31555594.

The product of its digits is 508032, while the sum is 43.

The square root of 1672443673 is about 40895.5214296138. The cubic root of 1672443673 is about 1186.9994014533. Note that the first 3 decimals are identical.

The spelling of 1672443673 in words is "one billion, six hundred seventy-two million, four hundred forty-three thousand, six hundred seventy-three".