198946329156 has 81 divisors (see below), whose sum is σ = 509880260253. Its totient is φ = 65406425760.

The previous prime is 198946329149. The next prime is 198946329173. The reversal of 198946329156 is 651923649891.

The square root of 198946329156 is 446034.

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

198946329156 is a `hidden beast` number, since 1 + 9 + 89 + 463 + 2 + 91 + 5 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 123365322756 + 75581006400 = 351234^2 + 274920^2 .

It is a junction number, because it is equal to n+sod(n) for n = 198946329093 and 198946329102.

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, 211419646 + ... + 211420586.

Almost surely, 2^198946329156 is an apocalyptic number.

198946329156 is the 446034-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 198946329156

198946329156 is an abundant number, since it is smaller than the sum of its proper divisors (310933931097).

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

198946329156 is an frugal number, since it uses more digits than its factorization.

198946329156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2050 (or 1025 counting only the distinct ones).

The product of its digits is 25194240, while the sum is 63.

The spelling of 198946329156 in words is "one hundred ninety-eight billion, nine hundred forty-six million, three hundred twenty-nine thousand, one hundred fifty-six".