1153980180 has 72 divisors (see below), whose sum is σ = 3621126600. Its totient is φ = 297115392.

The previous prime is 1153980169. The next prime is 1153980211. The reversal of 1153980180 is 810893511.

It can be written as a sum of positive squares in 4 ways, for example, as 477772164 + 676208016 = 21858^2 + 26004^2 .

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 105315 + ... + 115754.

It is an arithmetic number, because the mean of its divisors is an integer number (50293425).

Almost surely, 2^1153980180 is an apocalyptic number.

1153980180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1153980180 is an abundant number, since it is smaller than the sum of its proper divisors (2467146420).

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

1153980180 is a wasteful number, since it uses less digits than its factorization.

1153980180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221113 (or 221108 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 36.

The square root of 1153980180 is about 33970.2837786204. The cubic root of 1153980180 is about 1048.8968550315.

It can be divided in two parts, 11539 and 80180, that added together give a palindrome (91719).

The spelling of 1153980180 in words is "one billion, one hundred fifty-three million, nine hundred eighty thousand, one hundred eighty".