2849249946921 has 16 divisors (see below), whose sum is σ = 4386474148224. Its totient is φ = 1611357848064.

The previous prime is 2849249946791. The next prime is 2849249946947. The reversal of 2849249946921 is 1296499429482.

It is not a de Polignac number, because 2849249946921 - 2¹⁷ = 2849249815849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2849249948921) 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, 699372030 + ... + 699376103.

It is an arithmetic number, because the mean of its divisors is an integer number (274154634264).

Almost surely, 2^{2849249946921} is an apocalyptic number.

2849249946921 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2849249946921 is a deficient number, since it is larger than the sum of its proper divisors (1537224201303).

2849249946921 is a wasteful number, since it uses less digits than its factorization.

2849249946921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1398748240.

The product of its digits is 161243136, while the sum is 69.

The spelling of 2849249946921 in words is "two trillion, eight hundred forty-nine billion, two hundred forty-nine million, nine hundred forty-six thousand, nine hundred twenty-one".