2138873464 has 48 divisors (see below), whose sum is σ = 4963003920. Its totient is φ = 846144000.

The previous prime is 2138873461. The next prime is 2138873497. The reversal of 2138873464 is 4643788312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2138873461) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 103537 + ... + 122464.

It is an arithmetic number, because the mean of its divisors is an integer number (103395915).

Almost surely, 2^2138873464 is an apocalyptic number.

It is an amenable number.

2138873464 is an abundant number, since it is smaller than the sum of its proper divisors (2824130456).

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

2138873464 is a wasteful number, since it uses less digits than its factorization.

2138873464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226040 (or 226023 counting only the distinct ones).

The product of its digits is 774144, while the sum is 46.

The square root of 2138873464 is about 46247.9563224149. The cubic root of 2138873464 is about 1288.4325781687.

The spelling of 2138873464 in words is "two billion, one hundred thirty-eight million, eight hundred seventy-three thousand, four hundred sixty-four".