2164457047 has 2 divisors, whose sum is σ = 2164457048. Its totient is φ = 2164457046.

The previous prime is 2164457041. The next prime is 2164457093. The reversal of 2164457047 is 7407544612.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2164457047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2164457041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1082228523 + 1082228524.

It is an arithmetic number, because the mean of its divisors is an integer number (1082228524).

Almost surely, 2^2164457047 is an apocalyptic number.

2164457047 is a deficient number, since it is larger than the sum of its proper divisors (1).

2164457047 is an equidigital number, since it uses as much as digits as its factorization.

2164457047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 188160, while the sum is 40.

The square root of 2164457047 is about 46523.7256354218. The cubic root of 2164457047 is about 1293.5493158282.

The spelling of 2164457047 in words is "two billion, one hundred sixty-four million, four hundred fifty-seven thousand, forty-seven".