23168632738 has 4 divisors (see below), whose sum is σ = 34752949110. Its totient is φ = 11584316368.

The previous prime is 23168632717. The next prime is 23168632789. The reversal of 23168632738 is 83723686132.

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., 19983497769 + 3185134969 = 141363^2 + 56437^2 .

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 23168632691 and 23168632700.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5792158183 + ... + 5792158186.

Almost surely, 2^23168632738 is an apocalyptic number.

23168632738 is a deficient number, since it is larger than the sum of its proper divisors (11584316372).

23168632738 is a wasteful number, since it uses less digits than its factorization.

23168632738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11584316371.

The product of its digits is 1741824, while the sum is 49.

The spelling of 23168632738 in words is "twenty-three billion, one hundred sixty-eight million, six hundred thirty-two thousand, seven hundred thirty-eight".