9681842 has 4 divisors (see below), whose sum is σ = 14522766. Its totient is φ = 4840920.

The previous prime is 9681829. The next prime is 9681883. The reversal of 9681842 is 2481869.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2481869 = 13 ⋅190913.

It can be written as a sum of positive squares in only one way, i.e., 9480241 + 201601 = 3079^2 + 449^2 .

It is a junction number, because it is equal to n+sod(n) for n = 9681796 and 9681805.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2420459 + ... + 2420462.

Almost surely, 2^9681842 is an apocalyptic number.

9681842 is a deficient number, since it is larger than the sum of its proper divisors (4840924).

9681842 is a wasteful number, since it uses less digits than its factorization.

9681842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4840923.

The product of its digits is 27648, while the sum is 38.

The square root of 9681842 is about 3111.5658437513. The cubic root of 9681842 is about 213.1339646731.

The spelling of 9681842 in words is "nine million, six hundred eighty-one thousand, eight hundred forty-two".