1149556180 has 12 divisors (see below), whose sum is σ = 2414068020. Its totient is φ = 459822464.

The previous prime is 1149556171. The next prime is 1149556189. The reversal of 1149556180 is 816559411.

It is an interprime number because it is at equal distance from previous prime (1149556171) and next prime (1149556189).

It can be written as a sum of positive squares in 2 ways, for example, as 461648196 + 687907984 = 21486^2 + 26228^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1149556189) 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 3 ways as a sum of consecutive naturals, for example, 28738885 + ... + 28738924.

It is an arithmetic number, because the mean of its divisors is an integer number (201172335).

Almost surely, 2^1149556180 is an apocalyptic number.

1149556180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1149556180 is an abundant number, since it is smaller than the sum of its proper divisors (1264511840).

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

1149556180 is a wasteful number, since it uses less digits than its factorization.

1149556180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57477818 (or 57477816 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 40.

The square root of 1149556180 is about 33905.1055152465. The cubic root of 1149556180 is about 1047.5547574013.

The spelling of 1149556180 in words is "one billion, one hundred forty-nine million, five hundred fifty-six thousand, one hundred eighty".