2955649921 has 4 divisors (see below), whose sum is σ = 3377885632. Its totient is φ = 2533414212.

The previous prime is 2955649819. The next prime is 2955649951. The reversal of 2955649921 is 1299465592.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2955649921 - 2²⁵ = 2922095489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2955649951) 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 3 ways as a sum of consecutive naturals, for example, 211117845 + ... + 211117858.

It is an arithmetic number, because the mean of its divisors is an integer number (844471408).

Almost surely, 2^2955649921 is an apocalyptic number.

It is an amenable number.

2955649921 is a deficient number, since it is larger than the sum of its proper divisors (422235711).

2955649921 is an equidigital number, since it uses as much as digits as its factorization.

2955649921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422235710.

The product of its digits is 1749600, while the sum is 52.

The square root of 2955649921 is about 54365.8893149004. The cubic root of 2955649921 is about 1435.1071594999.

The spelling of 2955649921 in words is "two billion, nine hundred fifty-five million, six hundred forty-nine thousand, nine hundred twenty-one".