2956205641 has 3 divisors (see below), whose sum is σ = 2956260013. Its totient is φ = 2956151270.

The previous prime is 2956205639. The next prime is 2956205669. The reversal of 2956205641 is 1465026592.

The square root of 2956205641 is 54371.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 2956205641 - 2¹ = 2956205639 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2956205594 and 2956205603.

It is not an unprimeable number, because it can be changed into a prime (2956205621) 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 2 ways as a sum of consecutive naturals, for example, 27186 + ... + 81556.

Almost surely, 2^2956205641 is an apocalyptic number.

2956205641 is the 54371-st square number.

2956205641 is the 27186-th centered octagonal number.

It is an amenable number.

2956205641 is a deficient number, since it is larger than the sum of its proper divisors (54372).

2956205641 is an frugal number, since it uses more digits than its factorization.

2956205641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108742 (or 54371 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 40.

The cubic root of 2956205641 is about 1435.1970966028.

Multiplying 2956205641 by its product of nonzero digits (129600), we get a square (383124251073600 = 19573560²).

The spelling of 2956205641 in words is "two billion, nine hundred fifty-six million, two hundred five thousand, six hundred forty-one".