2921561258 has 64 divisors (see below), whose sum is σ = 5763225600. Its totient is φ = 1076120640.

The previous prime is 2921561257. The next prime is 2921561261. The reversal of 2921561258 is 8521651292.

It is not an unprimeable number, because it can be changed into a prime (2921561257) 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 31 ways as a sum of consecutive naturals, for example, 2214323 + ... + 2215641.

It is an arithmetic number, because the mean of its divisors is an integer number (90050400).

Almost surely, 2^2921561258 is an apocalyptic number.

2921561258 is a deficient number, since it is larger than the sum of its proper divisors (2841664342).

2921561258 is a wasteful number, since it uses less digits than its factorization.

2921561258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2115.

The product of its digits is 86400, while the sum is 41.

The square root of 2921561258 is about 54051.4686016948. The cubic root of 2921561258 is about 1429.5685949871.

The spelling of 2921561258 in words is "two billion, nine hundred twenty-one million, five hundred sixty-one thousand, two hundred fifty-eight".