1105812497 has 4 divisors (see below), whose sum is σ = 1108232676. Its totient is φ = 1103392320.

The previous prime is 1105812457. The next prime is 1105812523. The reversal of 1105812497 is 7942185011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7942185011 = 43 ⋅184701977.

It can be written as a sum of positive squares in 2 ways, for example, as 645109201 + 460703296 = 25399^2 + 21464^2 .

It is a cyclic number.

It is not a de Polignac number, because 1105812497 - 2³⁰ = 32070673 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1105812497.

It is not an unprimeable number, because it can be changed into a prime (1105812457) 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 in 3 ways as a sum of consecutive naturals, for example, 1209404 + ... + 1210317.

It is an arithmetic number, because the mean of its divisors is an integer number (277058169).

Almost surely, 2^1105812497 is an apocalyptic number.

It is an amenable number.

1105812497 is a deficient number, since it is larger than the sum of its proper divisors (2420179).

1105812497 is an equidigital number, since it uses as much as digits as its factorization.

1105812497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2420178.

The product of its (nonzero) digits is 20160, while the sum is 38.

The square root of 1105812497 is about 33253.7591408851. The cubic root of 1105812497 is about 1034.0951419998.

The spelling of 1105812497 in words is "one billion, one hundred five million, eight hundred twelve thousand, four hundred ninety-seven".