1103561400 has 96 divisors (see below), whose sum is σ = 3427459200. Its totient is φ = 293731200.

The previous prime is 1103561387. The next prime is 1103561411. The reversal of 1103561400 is 41653011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 394005 + ... + 396795.

It is an arithmetic number, because the mean of its divisors is an integer number (35702700).

Almost surely, 2^1103561400 is an apocalyptic number.

1103561400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1103561400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1713729600).

1103561400 is an abundant number, since it is smaller than the sum of its proper divisors (2323897800).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1103561400 is a wasteful number, since it uses less digits than its factorization.

1103561400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3469 (or 3460 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 1103561400 is about 33219.8946416150. The cubic root of 1103561400 is about 1033.3929645319.

The spelling of 1103561400 in words is "one billion, one hundred three million, five hundred sixty-one thousand, four hundred".