22294394537 has 2 divisors, whose sum is σ = 22294394538. Its totient is φ = 22294394536.

The previous prime is 22294394533. The next prime is 22294394579. The reversal of 22294394537 is 73549349222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14078059801 + 8216334736 = 118651^2 + 90644^2 .

It is a cyclic number.

It is not a de Polignac number, because 22294394537 - 2² = 22294394533 is a prime.

It is not a weakly prime, because it can be changed into another prime (22294394531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11147197268 + 11147197269.

It is an arithmetic number, because the mean of its divisors is an integer number (11147197269).

Almost surely, 2^22294394537 is an apocalyptic number.

It is an amenable number.

22294394537 is a deficient number, since it is larger than the sum of its proper divisors (1).

22294394537 is an equidigital number, since it uses as much as digits as its factorization.

22294394537 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3265920, while the sum is 50.

The spelling of 22294394537 in words is "twenty-two billion, two hundred ninety-four million, three hundred ninety-four thousand, five hundred thirty-seven".