2138421776 has 40 divisors (see below), whose sum is σ = 4197350400. Its totient is φ = 1055327616.

The previous prime is 2138421751. The next prime is 2138421787. The reversal of 2138421776 is 6771248312.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 385841 + ... + 391343.

It is an arithmetic number, because the mean of its divisors is an integer number (104933760).

Almost surely, 2^2138421776 is an apocalyptic number.

It is an amenable number.

2138421776 is a deficient number, since it is larger than the sum of its proper divisors (2058928624).

2138421776 is a wasteful number, since it uses less digits than its factorization.

2138421776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5823 (or 5817 counting only the distinct ones).

The product of its digits is 112896, while the sum is 41.

The square root of 2138421776 is about 46243.0727352757. The cubic root of 2138421776 is about 1288.3418745786.

The spelling of 2138421776 in words is "two billion, one hundred thirty-eight million, four hundred twenty-one thousand, seven hundred seventy-six".