1672044889 has 2 divisors, whose sum is σ = 1672044890. Its totient is φ = 1672044888.

The previous prime is 1672044887. The next prime is 1672044917. The reversal of 1672044889 is 9884402761.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1671174400 + 870489 = 40880^2 + 933^2 .

It is a cyclic number.

It is not a de Polignac number, because 1672044889 - 2¹ = 1672044887 is a prime.

It is a super-2 number, since 2×1672044889² = 5591468221662044642, which contains 22 as substring.

Together with 1672044887, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1672044887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 836022444 + 836022445.

It is an arithmetic number, because the mean of its divisors is an integer number (836022445).

Almost surely, 2^1672044889 is an apocalyptic number.

It is an amenable number.

1672044889 is a deficient number, since it is larger than the sum of its proper divisors (1).

1672044889 is an equidigital number, since it uses as much as digits as its factorization.

1672044889 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 774144, while the sum is 49.

The square root of 1672044889 is about 40890.6454950273. The cubic root of 1672044889 is about 1186.9050496963.

The spelling of 1672044889 in words is "one billion, six hundred seventy-two million, forty-four thousand, eight hundred eighty-nine".