9121740156 has 240 divisors, whose sum is σ = 25598643840. Its totient is φ = 2827198080.

The previous prime is 9121740151. The next prime is 9121740157. The reversal of 9121740156 is 6510471219.

It is a super-2 number, since 2×9121740156² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 9121740156.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9121740151) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 43230891 + ... + 43231101.

It is an arithmetic number, because the mean of its divisors is an integer number (106661016).

Almost surely, 2^9121740156 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9121740156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12799321920).

9121740156 is an abundant number, since it is smaller than the sum of its proper divisors (16476903684).

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

9121740156 is a wasteful number, since it uses less digits than its factorization.

9121740156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406 (or 395 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

The square root of 9121740156 is about 95507.8015452141. The cubic root of 9121740156 is about 2089.4207284831.

The spelling of 9121740156 in words is "nine billion, one hundred twenty-one million, seven hundred forty thousand, one hundred fifty-six".