26448189938 has 4 divisors (see below), whose sum is σ = 39672284910. Its totient is φ = 13224094968.

The previous prime is 26448189931. The next prime is 26448189941. The reversal of 26448189938 is 83998184462.

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., 25784972929 + 663217009 = 160577^2 + 25753^2 .

It is not an unprimeable number, because it can be changed into a prime (26448189931) 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, 6612047483 + ... + 6612047486.

Almost surely, 2^26448189938 is an apocalyptic number.

26448189938 is a deficient number, since it is larger than the sum of its proper divisors (13224094972).

26448189938 is a wasteful number, since it uses less digits than its factorization.

26448189938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13224094971.

The product of its digits is 23887872, while the sum is 62.

The spelling of 26448189938 in words is "twenty-six billion, four hundred forty-eight million, one hundred eighty-nine thousand, nine hundred thirty-eight".