1155787164 has 96 divisors (see below), whose sum is σ = 3438167040. Its totient is φ = 328912704.

The previous prime is 1155787163. The next prime is 1155787169. The reversal of 1155787164 is 4617875511.

1155787164 is a `hidden beast` number, since 1 + 1 + 5 + 578 + 71 + 6 + 4 = 666.

1155787164 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1155787163) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 195922 + ... + 201734.

It is an arithmetic number, because the mean of its divisors is an integer number (35814240).

Almost surely, 2^1155787164 is an apocalyptic number.

1155787164 is a gapful number since it is divisible by the number (14) 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 1155787164, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1719083520).

1155787164 is an abundant number, since it is smaller than the sum of its proper divisors (2282379876).

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

1155787164 is a wasteful number, since it uses less digits than its factorization.

1155787164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6096 (or 6088 counting only the distinct ones).

The product of its digits is 235200, while the sum is 45.

The square root of 1155787164 is about 33996.8699147436. The cubic root of 1155787164 is about 1049.4440485453. Note that the first 3 decimals are identical.

The spelling of 1155787164 in words is "one billion, one hundred fifty-five million, seven hundred eighty-seven thousand, one hundred sixty-four".