2138073168 has 80 divisors (see below), whose sum is σ = 6886273536. Its totient is φ = 555342720.

The previous prime is 2138073163. The next prime is 2138073181. The reversal of 2138073168 is 8613708312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2138073163) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 285546 + ... + 292937.

Almost surely, 2^2138073168 is an apocalyptic number.

2138073168 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2138073168 is an abundant number, since it is smaller than the sum of its proper divisors (4748200368).

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

2138073168 is a wasteful number, since it uses less digits than its factorization.

2138073168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578512 (or 578506 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 2138073168 is about 46239.3032819484. The cubic root of 2138073168 is about 1288.2718617780.

The spelling of 2138073168 in words is "two billion, one hundred thirty-eight million, seventy-three thousand, one hundred sixty-eight".