22195042949 has 2 divisors, whose sum is σ = 22195042950. Its totient is φ = 22195042948.

The previous prime is 22195042901. The next prime is 22195042973. The reversal of 22195042949 is 94924059122.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15127278049 + 7067764900 = 122993^2 + 84070^2 .

It is a cyclic number.

It is not a de Polignac number, because 22195042949 - 2⁸ = 22195042693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22195032949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11097521474 + 11097521475.

It is an arithmetic number, because the mean of its divisors is an integer number (11097521475).

Almost surely, 2^22195042949 is an apocalyptic number.

It is an amenable number.

22195042949 is a deficient number, since it is larger than the sum of its proper divisors (1).

22195042949 is an equidigital number, since it uses as much as digits as its factorization.

22195042949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 466560, while the sum is 47.

The spelling of 22195042949 in words is "twenty-two billion, one hundred ninety-five million, forty-two thousand, nine hundred forty-nine".