1103621409 has 32 divisors (see below), whose sum is σ = 1786713600. Its totient is φ = 667705680.

The previous prime is 1103621371. The next prime is 1103621423. The reversal of 1103621409 is 9041263011.

It is not a de Polignac number, because 1103621409 - 2¹² = 1103617313 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1103620409) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 188082 + ... + 193860.

It is an arithmetic number, because the mean of its divisors is an integer number (55834800).

Almost surely, 2^1103621409 is an apocalyptic number.

It is an amenable number.

1103621409 is a deficient number, since it is larger than the sum of its proper divisors (683092191).

1103621409 is a wasteful number, since it uses less digits than its factorization.

1103621409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6442 (or 6436 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 1103621409 is about 33220.7978381014. The cubic root of 1103621409 is about 1033.4116953292.

The spelling of 1103621409 in words is "one billion, one hundred three million, six hundred twenty-one thousand, four hundred nine".