22038318394 has 4 divisors (see below), whose sum is σ = 33057477594. Its totient is φ = 11019159196.

The previous prime is 22038318391. The next prime is 22038318397. The reversal of 22038318394 is 49381383022.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (22038318391) and next prime (22038318397).

It can be written as a sum of positive squares in only one way, i.e., 21819130369 + 219188025 = 147713^2 + 14805^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 22038318394.

It is not an unprimeable number, because it can be changed into a prime (22038318391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5509579597 + ... + 5509579600.

Almost surely, 2^22038318394 is an apocalyptic number.

22038318394 is a deficient number, since it is larger than the sum of its proper divisors (11019159200).

22038318394 is a wasteful number, since it uses less digits than its factorization.

22038318394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11019159199.

The product of its (nonzero) digits is 248832, while the sum is 43.

The spelling of 22038318394 in words is "twenty-two billion, thirty-eight million, three hundred eighteen thousand, three hundred ninety-four".