1672421173 has 8 divisors (see below), whose sum is σ = 1773111200. Its totient is φ = 1572997968.

The previous prime is 1672421171. The next prime is 1672421183. The reversal of 1672421173 is 3711242761.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1672421173 - 2¹ = 1672421171 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1672421171) 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 7 ways as a sum of consecutive naturals, for example, 313986 + ... + 319267.

It is an arithmetic number, because the mean of its divisors is an integer number (221638900).

Almost surely, 2^1672421173 is an apocalyptic number.

It is an amenable number.

1672421173 is a deficient number, since it is larger than the sum of its proper divisors (100690027).

1672421173 is a wasteful number, since it uses less digits than its factorization.

1672421173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 633411.

The product of its digits is 14112, while the sum is 34.

The square root of 1672421173 is about 40895.2463374412. The cubic root of 1672421173 is about 1186.9940783829.

The spelling of 1672421173 in words is "one billion, six hundred seventy-two million, four hundred twenty-one thousand, one hundred seventy-three".