2139165168 has 120 divisors (see below), whose sum is σ = 6636003840. Its totient is φ = 591454080.

The previous prime is 2139165167. The next prime is 2139165181. The reversal of 2139165168 is 8615619312.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2139165167) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 58243 + ... + 87581.

It is an arithmetic number, because the mean of its divisors is an integer number (55300032).

Almost surely, 2^2139165168 is an apocalyptic number.

2139165168 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2139165168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3318001920).

2139165168 is an abundant number, since it is smaller than the sum of its proper divisors (4496838672).

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

2139165168 is a wasteful number, since it uses less digits than its factorization.

2139165168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29395 (or 29382 counting only the distinct ones).

The product of its digits is 77760, while the sum is 42.

The square root of 2139165168 is about 46251.1099110065. The cubic root of 2139165168 is about 1288.4911485420.

The spelling of 2139165168 in words is "two billion, one hundred thirty-nine million, one hundred sixty-five thousand, one hundred sixty-eight".