9738398690 has 32 divisors (see below), whose sum is σ = 17747009280. Its totient is φ = 3847043200.

The previous prime is 9738398639. The next prime is 9738398693. The reversal of 9738398690 is 968938379.

It is a super-2 number, since 2×9738398690² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (9738398693) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 804785 + ... + 816795.

It is an arithmetic number, because the mean of its divisors is an integer number (554594040).

Almost surely, 2^9738398690 is an apocalyptic number.

9738398690 is a deficient number, since it is larger than the sum of its proper divisors (8008610590).

9738398690 is a wasteful number, since it uses less digits than its factorization.

9738398690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13018.

The product of its (nonzero) digits is 17635968, while the sum is 62.

The square root of 9738398690 is about 98683.3252885208. The cubic root of 9738398690 is about 2135.4816808314.

The spelling of 9738398690 in words is "nine billion, seven hundred thirty-eight million, three hundred ninety-eight thousand, six hundred ninety".