1097866216 has 8 divisors (see below), whose sum is σ = 2058499170. Its totient is φ = 548933104.

The previous prime is 1097866213. The next prime is 1097866223. The reversal of 1097866216 is 6126687901.

It can be written as a sum of positive squares in only one way, i.e., 838334116 + 259532100 = 28954^2 + 16110^2 .

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

It is not an unprimeable number, because it can be changed into a prime (1097866213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68616631 + ... + 68616646.

Almost surely, 2^1097866216 is an apocalyptic number.

It is an amenable number.

1097866216 is a deficient number, since it is larger than the sum of its proper divisors (960632954).

1097866216 is a wasteful number, since it uses less digits than its factorization.

1097866216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137233283 (or 137233279 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 46.

The square root of 1097866216 is about 33134.0642843585. The cubic root of 1097866216 is about 1031.6122098275.

The spelling of 1097866216 in words is "one billion, ninety-seven million, eight hundred sixty-six thousand, two hundred sixteen".