2138906796 has 48 divisors (see below), whose sum is σ = 5476119264. Its totient is φ = 645705216.

The previous prime is 2138906773. The next prime is 2138906801. The reversal of 2138906796 is 6976098312.

It is a super-4 number, since 4×2138906796⁴ (a number of 38 digits) contains 4444 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121081 + ... + 137616.

It is an arithmetic number, because the mean of its divisors is an integer number (114085818).

Almost surely, 2^2138906796 is an apocalyptic number.

2138906796 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

2138906796 is an abundant number, since it is smaller than the sum of its proper divisors (3337212468).

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

2138906796 is a wasteful number, since it uses less digits than its factorization.

2138906796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258770 (or 258768 counting only the distinct ones).

The product of its (nonzero) digits is 979776, while the sum is 51.

The square root of 2138906796 is about 46248.3166828805. The cubic root of 2138906796 is about 1288.4392710707.

The spelling of 2138906796 in words is "two billion, one hundred thirty-eight million, nine hundred six thousand, seven hundred ninety-six".