1097532805 has 4 divisors (see below), whose sum is σ = 1317039372. Its totient is φ = 878026240.

The previous prime is 1097532763. The next prime is 1097532823. The reversal of 1097532805 is 5082357901.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5082357901 = 3571 ⋅1423231.

It can be written as a sum of positive squares in 2 ways, for example, as 334999809 + 762532996 = 18303^2 + 27614^2 .

It is not a de Polignac number, because 1097532805 - 2²³ = 1089144197 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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 3 ways as a sum of consecutive naturals, for example, 109753276 + ... + 109753285.

It is an arithmetic number, because the mean of its divisors is an integer number (329259843).

Almost surely, 2^1097532805 is an apocalyptic number.

It is an amenable number.

1097532805 is a deficient number, since it is larger than the sum of its proper divisors (219506567).

1097532805 is an equidigital number, since it uses as much as digits as its factorization.

1097532805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219506566.

The product of its (nonzero) digits is 75600, while the sum is 40.

The square root of 1097532805 is about 33129.0326601910. The cubic root of 1097532805 is about 1031.5077691475.

The spelling of 1097532805 in words is "one billion, ninety-seven million, five hundred thirty-two thousand, eight hundred five".