538423521386 has 16 divisors (see below), whose sum is σ = 809356811400. Its totient is φ = 268638289920.

The previous prime is 538423521371. The next prime is 538423521413. The reversal of 538423521386 is 683125324835.

It can be written as a sum of positive squares in 4 ways, for example, as 471920911225 + 66502610161 = 686965^2 + 257881^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2850026 + ... + 3033066.

Almost surely, 2^538423521386 is an apocalyptic number.

538423521386 is a deficient number, since it is larger than the sum of its proper divisors (270933290014).

538423521386 is a wasteful number, since it uses less digits than its factorization.

538423521386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186169.

The product of its digits is 4147200, while the sum is 50.

The spelling of 538423521386 in words is "five hundred thirty-eight billion, four hundred twenty-three million, five hundred twenty-one thousand, three hundred eighty-six".