2137746168 has 80 divisors (see below), whose sum is σ = 6014459880. Its totient is φ = 709394112.

The previous prime is 2137746137. The next prime is 2137746181. The reversal of 2137746168 is 8616477312.

2137746168 is a `hidden beast` number, since 21 + 3 + 7 + 7 + 4 + 616 + 8 = 666.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 139830 + ... + 154362.

Almost surely, 2^2137746168 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 2137746168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3007229940).

2137746168 is an abundant number, since it is smaller than the sum of its proper divisors (3876713712).

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

2137746168 is a wasteful number, since it uses less digits than its factorization.

2137746168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14778 (or 14765 counting only the distinct ones).

The product of its digits is 338688, while the sum is 45.

The square root of 2137746168 is about 46235.7671938079. The cubic root of 2137746168 is about 1288.2061817094.

The spelling of 2137746168 in words is "two billion, one hundred thirty-seven million, seven hundred forty-six thousand, one hundred sixty-eight".