2199456451 has 4 divisors (see below), whose sum is σ = 2200021600. Its totient is φ = 2198891304.

The previous prime is 2199456437. The next prime is 2199456463. The reversal of 2199456451 is 1546549912.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2199456451 - 2⁵ = 2199456419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2199456401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 276696 + ... + 284533.

It is an arithmetic number, because the mean of its divisors is an integer number (550005400).

Almost surely, 2^2199456451 is an apocalyptic number.

2199456451 is a deficient number, since it is larger than the sum of its proper divisors (565149).

2199456451 is an equidigital number, since it uses as much as digits as its factorization.

2199456451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 565148.

The product of its digits is 388800, while the sum is 46.

The square root of 2199456451 is about 46898.3629884882. The cubic root of 2199456451 is about 1300.4843266380.

The spelling of 2199456451 in words is "two billion, one hundred ninety-nine million, four hundred fifty-six thousand, four hundred fifty-one".