1673621338 has 8 divisors (see below), whose sum is σ = 2658104532. Its totient is φ = 787586496.

The previous prime is 1673621297. The next prime is 1673621351. The reversal of 1673621338 is 8331263761.

It can be written as a sum of positive squares in 2 ways, for example, as 1625137969 + 48483369 = 40313^2 + 6963^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 1673621338.

It is an unprimeable number.

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, 24612045 + ... + 24612112.

Almost surely, 2^1673621338 is an apocalyptic number.

1673621338 is a deficient number, since it is larger than the sum of its proper divisors (984483194).

1673621338 is a wasteful number, since it uses less digits than its factorization.

1673621338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49224176.

The product of its digits is 108864, while the sum is 40.

The square root of 1673621338 is about 40909.9173550864. The cubic root of 1673621338 is about 1187.2779478880.

The spelling of 1673621338 in words is "one billion, six hundred seventy-three million, six hundred twenty-one thousand, three hundred thirty-eight".