2921428961 has 36 divisors (see below), whose sum is σ = 3463600896. Its totient is φ = 2460799440.

The previous prime is 2921428921. The next prime is 2921428997. The reversal of 2921428961 is 1698241292.

It is not a de Polignac number, because 2921428961 - 2²⁶ = 2854320097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2921428921) by changing a digit.

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 in 35 ways as a sum of consecutive naturals, for example, 2052296 + ... + 2053718.

It is an arithmetic number, because the mean of its divisors is an integer number (96211136).

Almost surely, 2^2921428961 is an apocalyptic number.

It is an amenable number.

2921428961 is a deficient number, since it is larger than the sum of its proper divisors (542171935).

2921428961 is a wasteful number, since it uses less digits than its factorization.

2921428961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1530 (or 1500 counting only the distinct ones).

The product of its digits is 124416, while the sum is 44.

The square root of 2921428961 is about 54050.2447820544. The cubic root of 2921428961 is about 1429.5470162860.

It can be divided in two parts, 292142 and 8961, that added together give a palindrome (301103).

The spelling of 2921428961 in words is "two billion, nine hundred twenty-one million, four hundred twenty-eight thousand, nine hundred sixty-one".