1097043845 has 8 divisors (see below), whose sum is σ = 1323274776. Its totient is φ = 873086976.

The previous prime is 1097043839. The next prime is 1097043877. The reversal of 1097043845 is 5483407901.

It can be written as a sum of positive squares in 4 ways, for example, as 23367556 + 1073676289 = 4834^2 + 32767^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1097043845 - 2⁸ = 1097043589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 567452 + ... + 569381.

It is an arithmetic number, because the mean of its divisors is an integer number (165409347).

Almost surely, 2^1097043845 is an apocalyptic number.

It is an amenable number.

1097043845 is a deficient number, since it is larger than the sum of its proper divisors (226230931).

1097043845 is a wasteful number, since it uses less digits than its factorization.

1097043845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1137031.

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 1097043845 is about 33121.6522081855. The cubic root of 1097043845 is about 1031.3545646283.

The spelling of 1097043845 in words is "one billion, ninety-seven million, forty-three thousand, eight hundred forty-five".