2773331388 has 18 divisors (see below), whose sum is σ = 7010365544. Its totient is φ = 924443784.

The previous prime is 2773331387. The next prime is 2773331401. The reversal of 2773331388 is 8831333772.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2773331387) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 38518456 + ... + 38518527.

Almost surely, 2^2773331388 is an apocalyptic number.

It is an amenable number.

2773331388 is an abundant number, since it is smaller than the sum of its proper divisors (4237034156).

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

2773331388 is a wasteful number, since it uses less digits than its factorization.

2773331388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77036993 (or 77036988 counting only the distinct ones).

The product of its digits is 508032, while the sum is 45.

The square root of 2773331388 is about 52662.4286185132. The cubic root of 2773331388 is about 1404.9706622041.

The spelling of 2773331388 in words is "two billion, seven hundred seventy-three million, three hundred thirty-one thousand, three hundred eighty-eight".