9131749998 has 64 divisors (see below), whose sum is σ = 21507644928. Its totient is φ = 2530154880.

The previous prime is 9131749993. The next prime is 9131750003. The reversal of 9131749998 is 8999471319.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (9131749993) and next prime (9131750003).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9131749993) 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, 467508 + ... + 486648.

It is an arithmetic number, because the mean of its divisors is an integer number (336056952).

Almost surely, 2^9131749998 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9131749998, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10753822464).

9131749998 is an abundant number, since it is smaller than the sum of its proper divisors (12375894930).

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

9131749998 is a wasteful number, since it uses less digits than its factorization.

9131749998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19497.

The product of its digits is 4408992, while the sum is 60.

The square root of 9131749998 is about 95560.1904456034. The cubic root of 9131749998 is about 2090.1847320364.

The spelling of 9131749998 in words is "nine billion, one hundred thirty-one million, seven hundred forty-nine thousand, nine hundred ninety-eight".