2731122644 has 6 divisors (see below), whose sum is σ = 4779464634. Its totient is φ = 1365561320.

The previous prime is 2731122637. The next prime is 2731122659. The reversal of 2731122644 is 4462211372.

It can be written as a sum of positive squares in only one way, i.e., 2642988100 + 88134544 = 51410^2 + 9388^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2731122644.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 341390327 + ... + 341390334.

It is an arithmetic number, because the mean of its divisors is an integer number (796577439).

Almost surely, 2^2731122644 is an apocalyptic number.

It is an amenable number.

2731122644 is a deficient number, since it is larger than the sum of its proper divisors (2048341990).

2731122644 is a wasteful number, since it uses less digits than its factorization.

2731122644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 682780665 (or 682780663 counting only the distinct ones).

The product of its digits is 16128, while the sum is 32.

The square root of 2731122644 is about 52260.1439339771. The cubic root of 2731122644 is about 1397.8065386408.

The spelling of 2731122644 in words is "two billion, seven hundred thirty-one million, one hundred twenty-two thousand, six hundred forty-four".