9894311690 has 16 divisors (see below), whose sum is σ = 18188692992. Its totient is φ = 3873517584.

The previous prime is 9894311597. The next prime is 9894311699. The reversal of 9894311690 is 961134989.

It is a super-2 number, since 2×9894311690² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (9894311699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10525394 + ... + 10526333.

It is an arithmetic number, because the mean of its divisors is an integer number (1136793312).

Almost surely, 2^9894311690 is an apocalyptic number.

9894311690 is a deficient number, since it is larger than the sum of its proper divisors (8294381302).

9894311690 is a wasteful number, since it uses less digits than its factorization.

9894311690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21051781.

The product of its (nonzero) digits is 419904, while the sum is 50.

The square root of 9894311690 is about 99470.1547701621. The cubic root of 9894311690 is about 2146.8178408972.

The spelling of 9894311690 in words is "nine billion, eight hundred ninety-four million, three hundred eleven thousand, six hundred ninety".