197790956 has 18 divisors (see below), whose sum is σ = 380462460. Its totient is φ = 89904760.

The previous prime is 197790953. The next prime is 197790977. The reversal of 197790956 is 659097791.

197790956 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 197790898 and 197790907.

It is not an unprimeable number, because it can be changed into a prime (197790953) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 203846 + ... + 204813.

Almost surely, 2^197790956 is an apocalyptic number.

It is an amenable number.

197790956 is a deficient number, since it is larger than the sum of its proper divisors (182671504).

197790956 is a wasteful number, since it uses less digits than its factorization.

197790956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408685 (or 408672 counting only the distinct ones).

The product of its (nonzero) digits is 1071630, while the sum is 53.

The square root of 197790956 is about 14063.8172627491. The cubic root of 197790956 is about 582.6424768907.

The spelling of 197790956 in words is "one hundred ninety-seven million, seven hundred ninety thousand, nine hundred fifty-six".