1103806145 has 16 divisors (see below), whose sum is σ = 1427367312. Its totient is φ = 814598400.

The previous prime is 1103806117. The next prime is 1103806147. The reversal of 1103806145 is 5416083011.

It can be written as a sum of positive squares in 8 ways, for example, as 393903409 + 709902736 = 19847^2 + 26644^2 .

It is not a de Polignac number, because 1103806145 - 2¹⁴ = 1103789761 is a prime.

It is a super-2 number, since 2×1103806145² = 2436776011479522050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1103806147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 119099 + ... + 128031.

It is an arithmetic number, because the mean of its divisors is an integer number (89210457).

Almost surely, 2^1103806145 is an apocalyptic number.

It is an amenable number.

1103806145 is a deficient number, since it is larger than the sum of its proper divisors (323561167).

1103806145 is a wasteful number, since it uses less digits than its factorization.

1103806145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10852.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 1103806145 is about 33223.5781486582. The cubic root of 1103806145 is about 1033.4693532936.

Adding to 1103806145 its reverse (5416083011), we get a palindrome (6519889156).

The spelling of 1103806145 in words is "one billion, one hundred three million, eight hundred six thousand, one hundred forty-five".