1705428832538 has 4 divisors (see below), whose sum is σ = 2558143248810. Its totient is φ = 852714416268.

The previous prime is 1705428832537. The next prime is 1705428832561. The reversal of 1705428832538 is 8352388245071.

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., 1502382164089 + 203046668449 = 1225717^2 + 450607^2 .

It is not an unprimeable number, because it can be changed into a prime (1705428832537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 426357208133 + ... + 426357208136.

Almost surely, 2^{1705428832538} is an apocalyptic number.

1705428832538 is a deficient number, since it is larger than the sum of its proper divisors (852714416272).

1705428832538 is an equidigital number, since it uses as much as digits as its factorization.

1705428832538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 852714416271.

The product of its (nonzero) digits is 12902400, while the sum is 56.

The spelling of 1705428832538 in words is "one trillion, seven hundred five billion, four hundred twenty-eight million, eight hundred thirty-two thousand, five hundred thirty-eight".