2945355638 has 24 divisors (see below), whose sum is σ = 4772806200. Its totient is φ = 1362541568.

The previous prime is 2945355629. The next prime is 2945355671. The reversal of 2945355638 is 8365535492.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9083 + ... + 77286.

It is an arithmetic number, because the mean of its divisors is an integer number (198866925).

Almost surely, 2^2945355638 is an apocalyptic number.

2945355638 is a deficient number, since it is larger than the sum of its proper divisors (1827450562).

2945355638 is a wasteful number, since it uses less digits than its factorization.

2945355638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86464 (or 86447 counting only the distinct ones).

The product of its digits is 3888000, while the sum is 50.

The square root of 2945355638 is about 54271.1307971374. The cubic root of 2945355638 is about 1433.4391017797.

The spelling of 2945355638 in words is "two billion, nine hundred forty-five million, three hundred fifty-five thousand, six hundred thirty-eight".