2100546673 has 4 divisors (see below), whose sum is σ = 2224108260. Its totient is φ = 1976985088.

The previous prime is 2100546667. The next prime is 2100546683. The reversal of 2100546673 is 3766450012.

It is a happy number.

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 1896428304 + 204118369 = 43548^2 + 14287^2 .

It is a cyclic number.

It is not a de Polignac number, because 2100546673 - 2¹³ = 2100538481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2100546683) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61780768 + ... + 61780801.

It is an arithmetic number, because the mean of its divisors is an integer number (556027065).

Almost surely, 2^2100546673 is an apocalyptic number.

It is an amenable number.

2100546673 is a deficient number, since it is larger than the sum of its proper divisors (123561587).

2100546673 is a wasteful number, since it uses less digits than its factorization.

2100546673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123561586.

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 2100546673 is about 45831.7212528615. The cubic root of 2100546673 is about 1280.6902756726.

Adding to 2100546673 its reverse (3766450012), we get a palindrome (5866996685).

The spelling of 2100546673 in words is "two billion, one hundred million, five hundred forty-six thousand, six hundred seventy-three".