198323730956 has 12 divisors (see below), whose sum is σ = 373763954592. Its totient is φ = 91534029648.

The previous prime is 198323730877. The next prime is 198323730961. The reversal of 198323730956 is 659037323891.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1906958900 + ... + 1906959003.

It is an arithmetic number, because the mean of its divisors is an integer number (31146996216).

Almost surely, 2^198323730956 is an apocalyptic number.

It is an amenable number.

198323730956 is a deficient number, since it is larger than the sum of its proper divisors (175440223636).

198323730956 is a wasteful number, since it uses less digits than its factorization.

198323730956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3813917920 (or 3813917918 counting only the distinct ones).

The product of its (nonzero) digits is 7348320, while the sum is 56.

The spelling of 198323730956 in words is "one hundred ninety-eight billion, three hundred twenty-three million, seven hundred thirty thousand, nine hundred fifty-six".