2106430636 has 12 divisors (see below), whose sum is σ = 3715280128. Its totient is φ = 1044922032.

The previous prime is 2106430633. The next prime is 2106430661. The reversal of 2106430636 is 6360346012.

It is a junction number, because it is equal to n+sod(n) for n = 2106430598 and 2106430607.

It is not an unprimeable number, because it can be changed into a prime (2106430633) 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, 2072751 + ... + 2073766.

Almost surely, 2^2106430636 is an apocalyptic number.

It is an amenable number.

2106430636 is a deficient number, since it is larger than the sum of its proper divisors (1608849492).

2106430636 is a wasteful number, since it uses less digits than its factorization.

2106430636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4146648 (or 4146646 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 31.

The square root of 2106430636 is about 45895.8673085061. The cubic root of 2106430636 is about 1281.8849661070.

Adding to 2106430636 its reverse (6360346012), we get a palindrome (8466776648).

The spelling of 2106430636 in words is "two billion, one hundred six million, four hundred thirty thousand, six hundred thirty-six".