1103609401 has 4 divisors (see below), whose sum is σ = 1118727412. Its totient is φ = 1088491392.

The previous prime is 1103609399. The next prime is 1103609431. The reversal of 1103609401 is 1049063011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1049063011 = 59 ⋅17780729.

It can be written as a sum of positive squares in 2 ways, for example, as 718508025 + 385101376 = 26805^2 + 19624^2 .

It is a cyclic number.

It is not a de Polignac number, because 1103609401 - 2¹ = 1103609399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1103609431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7558896 + ... + 7559041.

It is an arithmetic number, because the mean of its divisors is an integer number (279681853).

Almost surely, 2^1103609401 is an apocalyptic number.

It is an amenable number.

1103609401 is a deficient number, since it is larger than the sum of its proper divisors (15118011).

1103609401 is an equidigital number, since it uses as much as digits as its factorization.

1103609401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15118010.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 1103609401 is about 33220.6171074530. The cubic root of 1103609401 is about 1033.4079472888.

The spelling of 1103609401 in words is "one billion, one hundred three million, six hundred nine thousand, four hundred one".