2921238445 has 16 divisors (see below), whose sum is σ = 3568481280. Its totient is φ = 2295264384.

The previous prime is 2921238443. The next prime is 2921238449. The reversal of 2921238445 is 5448321292.

It is a cyclic number.

It is not a de Polignac number, because 2921238445 - 2¹ = 2921238443 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2921238398 and 2921238407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2921238443) 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, 70492 + ... + 103978.

It is an arithmetic number, because the mean of its divisors is an integer number (223030080).

Almost surely, 2^2921238445 is an apocalyptic number.

It is an amenable number.

2921238445 is a deficient number, since it is larger than the sum of its proper divisors (647242835).

2921238445 is a wasteful number, since it uses less digits than its factorization.

2921238445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33804.

The product of its digits is 138240, while the sum is 40.

The square root of 2921238445 is about 54048.4823561217. The cubic root of 2921238445 is about 1429.5159404548.

The spelling of 2921238445 in words is "two billion, nine hundred twenty-one million, two hundred thirty-eight thousand, four hundred forty-five".