196162181604 has 81 divisors (see below), whose sum is σ = 501678238971. Its totient is φ = 64628259840.

The previous prime is 196162181599. The next prime is 196162181623. The reversal of 196162181604 is 406181261691.

The square root of 196162181604 is 442902.

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

196162181604 is a `hidden beast` number, since 1 + 9 + 6 + 1 + 621 + 8 + 16 + 0 + 4 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 98037872100 + 98124309504 = 313110^2 + 313248^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 196162181604.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 257768584 + ... + 257769344.

Almost surely, 2^196162181604 is an apocalyptic number.

196162181604 is the 442902-nd square number.

It is an amenable number.

196162181604 is an abundant number, since it is smaller than the sum of its proper divisors (305516057367).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

196162181604 is an frugal number, since it uses more digits than its factorization.

196162181604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1726 (or 863 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The spelling of 196162181604 in words is "one hundred ninety-six billion, one hundred sixty-two million, one hundred eighty-one thousand, six hundred four".