2138777084 has 12 divisors (see below), whose sum is σ = 3905593104. Its totient is φ = 1022893344.

The previous prime is 2138777051. The next prime is 2138777093. The reversal of 2138777084 is 4807778312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11623697 + ... + 11623880.

It is an arithmetic number, because the mean of its divisors is an integer number (325466092).

Almost surely, 2^2138777084 is an apocalyptic number.

It is an amenable number.

2138777084 is a deficient number, since it is larger than the sum of its proper divisors (1766816020).

2138777084 is a wasteful number, since it uses less digits than its factorization.

2138777084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23247604 (or 23247602 counting only the distinct ones).

The product of its (nonzero) digits is 526848, while the sum is 47.

The square root of 2138777084 is about 46246.9143186873. The cubic root of 2138777084 is about 1288.4132251464.

The spelling of 2138777084 in words is "two billion, one hundred thirty-eight million, seven hundred seventy-seven thousand, eighty-four".