9861631630 has 8 divisors (see below), whose sum is σ = 17750936952. Its totient is φ = 3944652648.

The previous prime is 9861631621. The next prime is 9861631631. The reversal of 9861631630 is 361361689.

9861631630 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9861631631) 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, 493081572 + ... + 493081591.

It is an arithmetic number, because the mean of its divisors is an integer number (2218867119).

Almost surely, 2^9861631630 is an apocalyptic number.

9861631630 is a deficient number, since it is larger than the sum of its proper divisors (7889305322).

9861631630 is a wasteful number, since it uses less digits than its factorization.

9861631630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 986163170.

The product of its (nonzero) digits is 139968, while the sum is 43.

The square root of 9861631630 is about 99305.7482223461. The cubic root of 9861631630 is about 2144.4516490153.

The spelling of 9861631630 in words is "nine billion, eight hundred sixty-one million, six hundred thirty-one thousand, six hundred thirty".