1691180606116 has 9 divisors (see below), whose sum is σ = 2959570612299. Its totient is φ = 845589002604.

The previous prime is 1691180606111. The next prime is 1691180606119. The reversal of 1691180606116 is 6116060811961.

The square root of 1691180606116 is 1300454.

It is a perfect power (a square), and thus also a powerful number.

It is a super-2 number, since 2×1691180606116² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1691180606111) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 2275795 + ... + 2926021.

Almost surely, 2^{1691180606116} is an apocalyptic number.

1691180606116 is the 1300454-th square number.

It is an amenable number.

1691180606116 is a deficient number, since it is larger than the sum of its proper divisors (1268390006183).

1691180606116 is an frugal number, since it uses more digits than its factorization.

1691180606116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1300458 (or 650229 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 46.

It can be divided in two parts, 1691180 and 606116, that added together give a triangular number (2297296 = T₂₁₄₃).

The spelling of 1691180606116 in words is "one trillion, six hundred ninety-one billion, one hundred eighty million, six hundred six thousand, one hundred sixteen".