2738989666 has 32 divisors (see below), whose sum is σ = 4817877120. Its totient is φ = 1143331200.

The previous prime is 2738989637. The next prime is 2738989667. The reversal of 2738989666 is 6669898372.

It is a junction number, because it is equal to n+sod(n) for n = 2738989598 and 2738989607.

It is not an unprimeable number, because it can be changed into a prime (2738989667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 375805 + ... + 383023.

It is an arithmetic number, because the mean of its divisors is an integer number (150558660).

Almost surely, 2^2738989666 is an apocalyptic number.

2738989666 is a deficient number, since it is larger than the sum of its proper divisors (2078887454).

2738989666 is a wasteful number, since it uses less digits than its factorization.

2738989666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7930.

The product of its digits is 47029248, while the sum is 64.

The square root of 2738989666 is about 52335.3577039462. The cubic root of 2738989666 is about 1399.1473832325.

The spelling of 2738989666 in words is "two billion, seven hundred thirty-eight million, nine hundred eighty-nine thousand, six hundred sixty-six".