9798137149 has 4 divisors (see below), whose sum is σ = 10224143136. Its totient is φ = 9372131164.

The previous prime is 9798137147. The next prime is 9798137191. The reversal of 9798137149 is 9417318979.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 9798137149 - 2¹ = 9798137147 is a prime.

It is a super-2 number, since 2×9798137149² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9798137093 and 9798137102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9798137147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 213002959 + ... + 213003004.

It is an arithmetic number, because the mean of its divisors is an integer number (2556035784).

Almost surely, 2^9798137149 is an apocalyptic number.

It is an amenable number.

9798137149 is a deficient number, since it is larger than the sum of its proper divisors (426005987).

9798137149 is a wasteful number, since it uses less digits than its factorization.

9798137149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426005986.

The product of its digits is 3429216, while the sum is 58.

The square root of 9798137149 is about 98985.5401005622. The cubic root of 9798137149 is about 2139.8393588474.

The spelling of 9798137149 in words is "nine billion, seven hundred ninety-eight million, one hundred thirty-seven thousand, one hundred forty-nine".