2901391921 has 16 divisors (see below), whose sum is σ = 3158611200. Its totient is φ = 2654575360.

The previous prime is 2901391877. The next prime is 2901391951. The reversal of 2901391921 is 1291931092.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2901391921 - 2¹¹ = 2901389873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2901391951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 106866 + ... + 131236.

It is an arithmetic number, because the mean of its divisors is an integer number (197413200).

Almost surely, 2^2901391921 is an apocalyptic number.

It is an amenable number.

2901391921 is a deficient number, since it is larger than the sum of its proper divisors (257219279).

2901391921 is a wasteful number, since it uses less digits than its factorization.

2901391921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24584.

The product of its (nonzero) digits is 8748, while the sum is 37.

The square root of 2901391921 is about 53864.5701830062. The cubic root of 2901391921 is about 1426.2712646040.

The spelling of 2901391921 in words is "two billion, nine hundred one million, three hundred ninety-one thousand, nine hundred twenty-one".