2188444201 has 4 divisors (see below), whose sum is σ = 2188548432. Its totient is φ = 2188339972.

The previous prime is 2188444199. The next prime is 2188444231. The reversal of 2188444201 is 1024448812.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2188444201 - 2¹ = 2188444199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2188444231) 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, 8395 + ... + 66688.

It is an arithmetic number, because the mean of its divisors is an integer number (547137108).

Almost surely, 2^2188444201 is an apocalyptic number.

It is an amenable number.

2188444201 is a deficient number, since it is larger than the sum of its proper divisors (104231).

2188444201 is an equidigital number, since it uses as much as digits as its factorization.

2188444201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104230.

The product of its (nonzero) digits is 16384, while the sum is 34.

The square root of 2188444201 is about 46780.8101789612. The cubic root of 2188444201 is about 1298.3102703349.

The spelling of 2188444201 in words is "two billion, one hundred eighty-eight million, four hundred forty-four thousand, two hundred one".