9867631690 has 64 divisors (see below), whose sum is σ = 20712464640. Its totient is φ = 3314488320.

The previous prime is 9867631673. The next prime is 9867631693. The reversal of 9867631690 is 961367689.

It is a super-2 number, since 2×9867631690² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (9867631693) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3267001 + ... + 3270019.

It is an arithmetic number, because the mean of its divisors is an integer number (323632260).

Almost surely, 2^9867631690 is an apocalyptic number.

9867631690 is an abundant number, since it is smaller than the sum of its proper divisors (10844832950).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9867631690 is a wasteful number, since it uses less digits than its factorization.

9867631690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3967.

The product of its (nonzero) digits is 2939328, while the sum is 55.

The square root of 9867631690 is about 99335.9536623070. The cubic root of 9867631690 is about 2144.8864732725.

The spelling of 9867631690 in words is "nine billion, eight hundred sixty-seven million, six hundred thirty-one thousand, six hundred ninety".