1155107205 has 48 divisors (see below), whose sum is σ = 2310931584. Its totient is φ = 522806400.

The previous prime is 1155107201. The next prime is 1155107231. The reversal of 1155107205 is 5027015511.

It is not a de Polignac number, because 1155107205 - 2² = 1155107201 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1155107201) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 13662 + ... + 49968.

It is an arithmetic number, because the mean of its divisors is an integer number (48144408).

Almost surely, 2^1155107205 is an apocalyptic number.

1155107205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1155107205 is an abundant number, since it is smaller than the sum of its proper divisors (1155824379).

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

1155107205 is a wasteful number, since it uses less digits than its factorization.

1155107205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36426 (or 36423 counting only the distinct ones).

The product of its (nonzero) digits is 1750, while the sum is 27.

The square root of 1155107205 is about 33986.8681257923. The cubic root of 1155107205 is about 1049.2382093479.

The spelling of 1155107205 in words is "one billion, one hundred fifty-five million, one hundred seven thousand, two hundred five".