22691604938 has 4 divisors (see below), whose sum is σ = 34037407410. Its totient is φ = 11345802468.

The previous prime is 22691604931. The next prime is 22691604941. The reversal of 22691604938 is 83940619622.

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

It can be written as a sum of positive squares in only one way, i.e., 22578969169 + 112635769 = 150263^2 + 10613^2 .

It is not an unprimeable number, because it can be changed into a prime (22691604931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5672901233 + ... + 5672901236.

Almost surely, 2^22691604938 is an apocalyptic number.

22691604938 is a deficient number, since it is larger than the sum of its proper divisors (11345802472).

22691604938 is a wasteful number, since it uses less digits than its factorization.

22691604938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11345802471.

The product of its (nonzero) digits is 1119744, while the sum is 50.

The spelling of 22691604938 in words is "twenty-two billion, six hundred ninety-one million, six hundred four thousand, nine hundred thirty-eight".