196218877156 has 27 divisors (see below), whose sum is σ = 362438117769. Its totient is φ = 92937810528.

The previous prime is 196218877117. The next prime is 196218877171. The reversal of 196218877156 is 651778812691.

The square root of 196218877156 is 442966.

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

196218877156 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 143678902500 + 52539974656 = 379050^2 + 229216^2 .

It is a super-2 number, since 2×196218877156² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 196218877094 and 196218877103.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 16826880 + ... + 16838536.

Almost surely, 2^196218877156 is an apocalyptic number.

196218877156 is the 442966-th square number.

It is an amenable number.

196218877156 is a deficient number, since it is larger than the sum of its proper divisors (166219240613).

196218877156 is an frugal number, since it uses more digits than its factorization.

196218877156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23356 (or 11678 counting only the distinct ones).

The product of its digits is 10160640, while the sum is 61.

The spelling of 196218877156 in words is "one hundred ninety-six billion, two hundred eighteen million, eight hundred seventy-seven thousand, one hundred fifty-six".