2194331057 has 2 divisors, whose sum is σ = 2194331058. Its totient is φ = 2194331056.

The previous prime is 2194331053. The next prime is 2194331099. The reversal of 2194331057 is 7501334912.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1912225441 + 282105616 = 43729^2 + 16796^2 .

It is a cyclic number.

It is not a de Polignac number, because 2194331057 - 2² = 2194331053 is a prime.

It is not a weakly prime, because it can be changed into another prime (2194331053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1097165528 + 1097165529.

It is an arithmetic number, because the mean of its divisors is an integer number (1097165529).

Almost surely, 2^2194331057 is an apocalyptic number.

It is an amenable number.

2194331057 is a deficient number, since it is larger than the sum of its proper divisors (1).

2194331057 is an equidigital number, since it uses as much as digits as its factorization.

2194331057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 2194331057 is about 46843.6874829469. The cubic root of 2194331057 is about 1299.4733679517.

Adding to 2194331057 its reverse (7501334912), we get a palindrome (9695665969).

The spelling of 2194331057 in words is "two billion, one hundred ninety-four million, three hundred thirty-one thousand, fifty-seven".