1155345444 has 168 divisors, whose sum is σ = 3341956800. Its totient is φ = 346420800.

The previous prime is 1155345431. The next prime is 1155345469. The reversal of 1155345444 is 4445435511.

1155345444 is a `hidden beast` number, since 11 + 553 + 4 + 54 + 44 = 666.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1155345399 and 1155345408.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 5805657 + ... + 5805855.

It is an arithmetic number, because the mean of its divisors is an integer number (19892600).

Almost surely, 2^1155345444 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 1155345444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1670978400).

1155345444 is an abundant number, since it is smaller than the sum of its proper divisors (2186611356).

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

1155345444 is a wasteful number, since it uses less digits than its factorization.

1155345444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413 (or 396 counting only the distinct ones).

The product of its digits is 96000, while the sum is 36.

The square root of 1155345444 is about 33990.3728134894. The cubic root of 1155345444 is about 1049.3103389527.

The spelling of 1155345444 in words is "one billion, one hundred fifty-five million, three hundred forty-five thousand, four hundred forty-four".