2257868421 has 24 divisors (see below), whose sum is σ = 3292174080. Its totient is φ = 1491084000.

The previous prime is 2257868419. The next prime is 2257868429. The reversal of 2257868421 is 1248687522.

It is not a de Polignac number, because 2257868421 - 2¹ = 2257868419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2257868429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 526516 + ... + 530786.

It is an arithmetic number, because the mean of its divisors is an integer number (137173920).

Almost surely, 2^2257868421 is an apocalyptic number.

It is an amenable number.

2257868421 is a deficient number, since it is larger than the sum of its proper divisors (1034305659).

2257868421 is a wasteful number, since it uses less digits than its factorization.

2257868421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4817 (or 4814 counting only the distinct ones).

The product of its digits is 430080, while the sum is 45.

The square root of 2257868421 is about 47517.0329566146. The cubic root of 2257868421 is about 1311.8964086131.

The spelling of 2257868421 in words is "two billion, two hundred fifty-seven million, eight hundred sixty-eight thousand, four hundred twenty-one".