9913178142 has 256 divisors, whose sum is σ = 28650240000. Its totient is φ = 2523902976.

The previous prime is 9913178131. The next prime is 9913178147. The reversal of 9913178142 is 2418713199.

It is a super-2 number, since 2×9913178142² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9913178147) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 5981778 + ... + 5983434.

It is an arithmetic number, because the mean of its divisors is an integer number (111915000).

Almost surely, 2^9913178142 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9913178142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14325120000).

9913178142 is an abundant number, since it is smaller than the sum of its proper divisors (18737061858).

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

9913178142 is a wasteful number, since it uses less digits than its factorization.

9913178142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1725 (or 1705 counting only the distinct ones).

The product of its digits is 108864, while the sum is 45.

The square root of 9913178142 is about 99564.9443428760. The cubic root of 9913178142 is about 2148.1814903920.

The spelling of 9913178142 in words is "nine billion, nine hundred thirteen million, one hundred seventy-eight thousand, one hundred forty-two".