9872102146 has 4 divisors (see below), whose sum is σ = 14808153222. Its totient is φ = 4936051072.

The previous prime is 9872102143. The next prime is 9872102161. The reversal of 9872102146 is 6412012789.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 9498646521 + 373455625 = 97461^2 + 19325^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 9872102099 and 9872102108.

It is not an unprimeable number, because it can be changed into a prime (9872102143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2468025535 + ... + 2468025538.

Almost surely, 2^9872102146 is an apocalyptic number.

9872102146 is a deficient number, since it is larger than the sum of its proper divisors (4936051076).

9872102146 is a wasteful number, since it uses less digits than its factorization.

9872102146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4936051075.

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 9872102146 is about 99358.4528160539. The cubic root of 9872102146 is about 2145.2103325750.

The spelling of 9872102146 in words is "nine billion, eight hundred seventy-two million, one hundred two thousand, one hundred forty-six".