2199808951 has 4 divisors (see below), whose sum is σ = 2206336912. Its totient is φ = 2193280992.

The previous prime is 2199808943. The next prime is 2199808973. The reversal of 2199808951 is 1598089912.

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 2199808951 - 2³ = 2199808943 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2199808981) 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, 3263475 + ... + 3264148.

It is an arithmetic number, because the mean of its divisors is an integer number (551584228).

Almost surely, 2^2199808951 is an apocalyptic number.

2199808951 is a deficient number, since it is larger than the sum of its proper divisors (6527961).

2199808951 is an equidigital number, since it uses as much as digits as its factorization.

2199808951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6527960.

The product of its (nonzero) digits is 466560, while the sum is 52.

The square root of 2199808951 is about 46902.1209648348. The cubic root of 2199808951 is about 1300.5537977774.

The spelling of 2199808951 in words is "two billion, one hundred ninety-nine million, eight hundred eight thousand, nine hundred fifty-one".