10228172138 has 4 divisors (see below), whose sum is σ = 15342258210. Its totient is φ = 5114086068.

The previous prime is 10228172099. The next prime is 10228172159. The reversal of 10228172138 is 83127182201.

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., 8220504889 + 2007667249 = 90667^2 + 44807^2 .

It is a junction number, because it is equal to n+sod(n) for n = 10228172098 and 10228172107.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2557043033 + ... + 2557043036.

Almost surely, 2^10228172138 is an apocalyptic number.

10228172138 is a deficient number, since it is larger than the sum of its proper divisors (5114086072).

10228172138 is an equidigital number, since it uses as much as digits as its factorization.

10228172138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5114086071.

The product of its (nonzero) digits is 10752, while the sum is 35.

The spelling of 10228172138 in words is "ten billion, two hundred twenty-eight million, one hundred seventy-two thousand, one hundred thirty-eight".