226438638490 has 8 divisors (see below), whose sum is σ = 407589549300. Its totient is φ = 90575455392.

The previous prime is 226438638469. The next prime is 226438638509. The reversal of 226438638490 is 94836834622.

It can be written as a sum of positive squares in 2 ways, for example, as 223529438521 + 2909199969 = 472789^2 + 53937^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11321931915 + ... + 11321931934.

Almost surely, 2^226438638490 is an apocalyptic number.

226438638490 is a deficient number, since it is larger than the sum of its proper divisors (181150910810).

226438638490 is a wasteful number, since it uses less digits than its factorization.

226438638490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22643863856.

The product of its (nonzero) digits is 11943936, while the sum is 55.

The spelling of 226438638490 in words is "two hundred twenty-six billion, four hundred thirty-eight million, six hundred thirty-eight thousand, four hundred ninety".