2921898655 has 16 divisors (see below), whose sum is σ = 3778316640. Its totient is φ = 2156381568.

The previous prime is 2921898653. The next prime is 2921898659. The reversal of 2921898655 is 5568981292.

2921898655 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 2921898655 - 2¹ = 2921898653 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2921898596 and 2921898605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2921898653) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99676 + ... + 125614.

It is an arithmetic number, because the mean of its divisors is an integer number (236144790).

Almost surely, 2^2921898655 is an apocalyptic number.

2921898655 is a deficient number, since it is larger than the sum of its proper divisors (856417985).

2921898655 is a wasteful number, since it uses less digits than its factorization.

2921898655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27690.

The product of its digits is 3110400, while the sum is 55.

The square root of 2921898655 is about 54054.5895831242. The cubic root of 2921898655 is about 1429.6236241931.

The spelling of 2921898655 in words is "two billion, nine hundred twenty-one million, eight hundred ninety-eight thousand, six hundred fifty-five".