1171972148 has 6 divisors (see below), whose sum is σ = 2050951266. Its totient is φ = 585986072.

The previous prime is 1171972133. The next prime is 1171972159. The reversal of 1171972148 is 8412791711.

It can be written as a sum of positive squares in only one way, i.e., 590101264 + 581870884 = 24292^2 + 24122^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 146496515 + ... + 146496522.

It is an arithmetic number, because the mean of its divisors is an integer number (341825211).

Almost surely, 2^1171972148 is an apocalyptic number.

It is an amenable number.

1171972148 is a deficient number, since it is larger than the sum of its proper divisors (878979118).

1171972148 is a wasteful number, since it uses less digits than its factorization.

1171972148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292993041 (or 292993039 counting only the distinct ones).

The product of its digits is 28224, while the sum is 41.

The square root of 1171972148 is about 34234.0787520272. The cubic root of 1171972148 is about 1054.3199642610.

The spelling of 1171972148 in words is "one billion, one hundred seventy-one million, nine hundred seventy-two thousand, one hundred forty-eight".