1189270080 has 224 divisors, whose sum is σ = 4268419200. Its totient is φ = 311629824.

The previous prime is 1189270079. The next prime is 1189270087. The reversal of 1189270080 is 800729811.

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

It is not an unprimeable number, because it can be changed into a prime (1189270087) 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, 508594 + ... + 510926.

Almost surely, 2^1189270080 is an apocalyptic number.

1189270080 is a gapful number since it is divisible by the number (10) 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 1189270080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2134209600).

1189270080 is an abundant number, since it is smaller than the sum of its proper divisors (3079149120).

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

1189270080 is a wasteful number, since it uses less digits than its factorization.

1189270080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2418 (or 2402 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 36.

The square root of 1189270080 is about 34485.7953366310. The cubic root of 1189270080 is about 1059.4817925077.

Adding to 1189270080 its reverse (800729811), we get a palindrome (1989999891).

The spelling of 1189270080 in words is "one billion, one hundred eighty-nine million, two hundred seventy thousand, eighty".