1211163848 has 8 divisors (see below), whose sum is σ = 2270932230. Its totient is φ = 605581920.

The previous prime is 1211163841. The next prime is 1211163869. The reversal of 1211163848 is 8483611121.

It can be written as a sum of positive squares in only one way, i.e., 1077021124 + 134142724 = 32818^2 + 11582^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-3 number, since 3×1211163848³ (a number of 28 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1211163841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75697733 + ... + 75697748.

Almost surely, 2^1211163848 is an apocalyptic number.

It is an amenable number.

1211163848 is a deficient number, since it is larger than the sum of its proper divisors (1059768382).

1211163848 is a wasteful number, since it uses less digits than its factorization.

1211163848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151395487 (or 151395483 counting only the distinct ones).

The product of its digits is 9216, while the sum is 35.

The square root of 1211163848 is about 34801.7793797961. The cubic root of 1211163848 is about 1065.9437799106.

Adding to 1211163848 its reverse (8483611121), we get a palindrome (9694774969).

The spelling of 1211163848 in words is "one billion, two hundred eleven million, one hundred sixty-three thousand, eight hundred forty-eight".