1672238889 has 12 divisors (see below), whose sum is σ = 2442597300. Its totient is φ = 1102299264.

The previous prime is 1672238879. The next prime is 1672238951. The reversal of 1672238889 is 9888322761.

It is a happy number.

1672238889 is a `hidden beast` number, since 167 + 22 + 388 + 89 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 904505625 + 767733264 = 30075^2 + 27708^2 .

It is not a de Polignac number, because 1672238889 - 2⁷ = 1672238761 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1672238809) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1043044 + ... + 1044645.

It is an arithmetic number, because the mean of its divisors is an integer number (203549775).

Almost surely, 2^1672238889 is an apocalyptic number.

It is an amenable number.

1672238889 is a deficient number, since it is larger than the sum of its proper divisors (770358411).

1672238889 is a wasteful number, since it uses less digits than its factorization.

1672238889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2087784 (or 2087781 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 54.

The square root of 1672238889 is about 40893.0176069216. The cubic root of 1672238889 is about 1186.9509517085.

It can be divided in two parts, 16722 and 38889, that added together give a triangular number (55611 = T₃₃₃).

The spelling of 1672238889 in words is "one billion, six hundred seventy-two million, two hundred thirty-eight thousand, eight hundred eighty-nine".