1100155344 has 160 divisors (see below), whose sum is σ = 3022842240. Its totient is φ = 344408064.

The previous prime is 1100155319. The next prime is 1100155349. The reversal of 1100155344 is 4435510011.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1100155349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9735832 + ... + 9735944.

It is an arithmetic number, because the mean of its divisors is an integer number (18892764).

Almost surely, 2^1100155344 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1100155344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1511421120).

1100155344 is an abundant number, since it is smaller than the sum of its proper divisors (1922686896).

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

1100155344 is a wasteful number, since it uses less digits than its factorization.

1100155344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309 (or 303 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 1100155344 is about 33168.5897197936. The cubic root of 1100155344 is about 1032.3287066607.

Adding to 1100155344 its reverse (4435510011), we get a palindrome (5535665355).

The spelling of 1100155344 in words is "one billion, one hundred million, one hundred fifty-five thousand, three hundred forty-four".