1105440361 has 4 divisors (see below), whose sum is σ = 1108282500. Its totient is φ = 1102598224.

The previous prime is 1105440359. The next prime is 1105440367. The reversal of 1105440361 is 1630445011.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 628454761 + 476985600 = 25069^2 + 21840^2 .

It is a cyclic number.

It is not a de Polignac number, because 1105440361 - 2¹ = 1105440359 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1105440367) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1420486 + ... + 1421263.

It is an arithmetic number, because the mean of its divisors is an integer number (277070625).

Almost surely, 2^1105440361 is an apocalyptic number.

It is an amenable number.

1105440361 is a deficient number, since it is larger than the sum of its proper divisors (2842139).

1105440361 is an equidigital number, since it uses as much as digits as its factorization.

1105440361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2842138.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 1105440361 is about 33248.1632725779. The cubic root of 1105440361 is about 1033.9791285989.

Adding to 1105440361 its reverse (1630445011), we get a palindrome (2735885372).

It can be divided in two parts, 11054 and 40361, that added together give a palindrome (51415).

The spelling of 1105440361 in words is "one billion, one hundred five million, four hundred forty thousand, three hundred sixty-one".