1685165872162 has 4 divisors (see below), whose sum is σ = 2527748808246. Its totient is φ = 842582936080.

The previous prime is 1685165872133. The next prime is 1685165872189. The reversal of 1685165872162 is 2612785615861.

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., 1134244170081 + 550921702081 = 1065009^2 + 742241^2 .

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 1685165872097 and 1685165872106.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 421291468039 + ... + 421291468042.

Almost surely, 2^{1685165872162} is an apocalyptic number.

1685165872162 is a deficient number, since it is larger than the sum of its proper divisors (842582936084).

1685165872162 is an equidigital number, since it uses as much as digits as its factorization.

1685165872162 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 842582936083.

The product of its digits is 9676800, while the sum is 58.

The spelling of 1685165872162 in words is "one trillion, six hundred eighty-five billion, one hundred sixty-five million, eight hundred seventy-two thousand, one hundred sixty-two".