1189315480 has 16 divisors (see below), whose sum is σ = 2675959920. Its totient is φ = 475726176.

The previous prime is 1189315447. The next prime is 1189315493. The reversal of 1189315480 is 845139811.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 29732887 = 1189315480 / (1 + 1 + 8 + 9 + 3 + 1 + 5 + 4 + 8 + 0).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14866404 + ... + 14866483.

It is an arithmetic number, because the mean of its divisors is an integer number (167247495).

Almost surely, 2^1189315480 is an apocalyptic number.

1189315480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1189315480 is an abundant number, since it is smaller than the sum of its proper divisors (1486644440).

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

1189315480 is a wasteful number, since it uses less digits than its factorization.

1189315480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29732898 (or 29732894 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 40.

The square root of 1189315480 is about 34486.4535723811. The cubic root of 1189315480 is about 1059.4952741276.

The spelling of 1189315480 in words is "one billion, one hundred eighty-nine million, three hundred fifteen thousand, four hundred eighty".