1103555340 has 432 divisors, whose sum is σ = 3984113952. Its totient is φ = 255301632.

The previous prime is 1103555339. The next prime is 1103555353. The reversal of 1103555340 is 435553011.

1103555340 is a `hidden beast` number, since 1 + 103 + 5 + 553 + 4 + 0 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 29825802 + ... + 29825838.

It is an arithmetic number, because the mean of its divisors is an integer number (9222486).

Almost surely, 2^1103555340 is an apocalyptic number.

1103555340 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 1103555340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1992056976).

1103555340 is an abundant number, since it is smaller than the sum of its proper divisors (2880558612).

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

1103555340 is a wasteful number, since it uses less digits than its factorization.

1103555340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116 (or 83 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The square root of 1103555340 is about 33219.8034310861. The cubic root of 1103555340 is about 1033.3910729674.

The spelling of 1103555340 in words is "one billion, one hundred three million, five hundred fifty-five thousand, three hundred forty".