3828515172122 has 4 divisors (see below), whose sum is σ = 5742772758186. Its totient is φ = 1914257586060.

The previous prime is 3828515172107. The next prime is 3828515172173. The reversal of 3828515172122 is 2212715158283.

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., 3645621241201 + 182893930921 = 1909351^2 + 427661^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 957128793029 + ... + 957128793032.

Almost surely, 2^{3828515172122} is an apocalyptic number.

3828515172122 is a deficient number, since it is larger than the sum of its proper divisors (1914257586064).

3828515172122 is a wasteful number, since it uses less digits than its factorization.

3828515172122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1914257586063.

The product of its digits is 537600, while the sum is 47.

The spelling of 3828515172122 in words is "three trillion, eight hundred twenty-eight billion, five hundred fifteen million, one hundred seventy-two thousand, one hundred twenty-two".