2188167049 has 2 divisors, whose sum is σ = 2188167050. Its totient is φ = 2188167048.

The previous prime is 2188167041. The next prime is 2188167061. The reversal of 2188167049 is 9407618812.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2116460025 + 71707024 = 46005^2 + 8468^2 .

It is a cyclic number.

It is not a de Polignac number, because 2188167049 - 2³ = 2188167041 is a prime.

It is not a weakly prime, because it can be changed into another prime (2188167041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1094083524 + 1094083525.

It is an arithmetic number, because the mean of its divisors is an integer number (1094083525).

Almost surely, 2^2188167049 is an apocalyptic number.

It is an amenable number.

2188167049 is a deficient number, since it is larger than the sum of its proper divisors (1).

2188167049 is an equidigital number, since it uses as much as digits as its factorization.

2188167049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 193536, while the sum is 46.

The square root of 2188167049 is about 46777.8478448934. The cubic root of 2188167049 is about 1298.2554605482.

The spelling of 2188167049 in words is "two billion, one hundred eighty-eight million, one hundred sixty-seven thousand, forty-nine".