1102003645 has 8 divisors (see below), whose sum is σ = 1324699704. Its totient is φ = 880072704.

The previous prime is 1102003633. The next prime is 1102003649. The reversal of 1102003645 is 5463002011.

It can be written as a sum of positive squares in 4 ways, for example, as 624100324 + 477903321 = 24982^2 + 21861^2 .

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 1102003645 - 2¹⁷ = 1101872573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1102003649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 188104 + ... + 193873.

It is an arithmetic number, because the mean of its divisors is an integer number (165587463).

Almost surely, 2^1102003645 is an apocalyptic number.

It is an amenable number.

1102003645 is a deficient number, since it is larger than the sum of its proper divisors (222696059).

1102003645 is an equidigital number, since it uses as much as digits as its factorization.

1102003645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 382559.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 1102003645 is about 33196.4402459059. The cubic root of 1102003645 is about 1032.9064998041.

Adding to 1102003645 its reverse (5463002011), we get a palindrome (6565005656).

The spelling of 1102003645 in words is "one billion, one hundred two million, three thousand, six hundred forty-five".