1198169156 has 6 divisors (see below), whose sum is σ = 2096796030. Its totient is φ = 599084576.

The previous prime is 1198169149. The next prime is 1198169179. The reversal of 1198169156 is 6519618911.

It can be written as a sum of positive squares in only one way, i.e., 975562756 + 222606400 = 31234^2 + 14920^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1198169156.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 149771141 + ... + 149771148.

It is an arithmetic number, because the mean of its divisors is an integer number (349466005).

Almost surely, 2^1198169156 is an apocalyptic number.

It is an amenable number.

1198169156 is a deficient number, since it is larger than the sum of its proper divisors (898626874).

1198169156 is a wasteful number, since it uses less digits than its factorization.

1198169156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299542293 (or 299542291 counting only the distinct ones).

The product of its digits is 116640, while the sum is 47.

The square root of 1198169156 is about 34614.5801072323. The cubic root of 1198169156 is about 1062.1178601951.

The spelling of 1198169156 in words is "one billion, one hundred ninety-eight million, one hundred sixty-nine thousand, one hundred fifty-six".