1097658081 has 32 divisors (see below), whose sum is σ = 1759667840. Its totient is φ = 672235200.

The previous prime is 1097658077. The next prime is 1097658173. The reversal of 1097658081 is 1808567901.

1097658081 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1097658081 - 2² = 1097658077 is a prime.

It is a super-2 number, since 2×1097658081² = 2409706525569205122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1097658041) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 66651 + ... + 81471.

It is an arithmetic number, because the mean of its divisors is an integer number (54989620).

Almost surely, 2^1097658081 is an apocalyptic number.

It is an amenable number.

1097658081 is a deficient number, since it is larger than the sum of its proper divisors (662009759).

1097658081 is a wasteful number, since it uses less digits than its factorization.

1097658081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15054 (or 15048 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 45.

The square root of 1097658081 is about 33130.9233345526. The cubic root of 1097658081 is about 1031.5470142162.

The spelling of 1097658081 in words is "one billion, ninety-seven million, six hundred fifty-eight thousand, eighty-one".