1672732889 has 4 divisors (see below), whose sum is σ = 1717941924. Its totient is φ = 1627523856.

The previous prime is 1672732861. The next prime is 1672732909. The reversal of 1672732889 is 9882372761.

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 1042321225 + 630411664 = 32285^2 + 25108^2 .

It is a cyclic number.

It is not a de Polignac number, because 1672732889 - 2¹² = 1672728793 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 1672732889.

It is not an unprimeable number, because it can be changed into a prime (1672732829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22604462 + ... + 22604535.

It is an arithmetic number, because the mean of its divisors is an integer number (429485481).

Almost surely, 2^1672732889 is an apocalyptic number.

It is an amenable number.

1672732889 is a deficient number, since it is larger than the sum of its proper divisors (45209035).

1672732889 is an equidigital number, since it uses as much as digits as its factorization.

1672732889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45209034.

The product of its digits is 2032128, while the sum is 53.

The square root of 1672732889 is about 40899.0573118746. The cubic root of 1672732889 is about 1187.0678201864.

The spelling of 1672732889 in words is "one billion, six hundred seventy-two million, seven hundred thirty-two thousand, eight hundred eighty-nine".