1189878480 has 120 divisors (see below), whose sum is σ = 4566886272. Its totient is φ = 271971072.

The previous prime is 1189878479. The next prime is 1189878491. The reversal of 1189878480 is 848789811.

It is a happy number.

1189878480 is a `hidden beast` number, since 1 + 1 + 8 + 98 + 78 + 480 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is a super-2 number, since 2×1189878480² = 2831621594334220800, which contains 22 as substring.

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, 113004 + ... + 123083.

Almost surely, 2^1189878480 is an apocalyptic number.

1189878480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1189878480 is an abundant number, since it is smaller than the sum of its proper divisors (3377007792).

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

1189878480 is a wasteful number, since it uses less digits than its factorization.

1189878480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236113 (or 236104 counting only the distinct ones).

The product of its (nonzero) digits is 1032192, while the sum is 54.

The square root of 1189878480 is about 34494.6152319460. The cubic root of 1189878480 is about 1059.6624295910.

The spelling of 1189878480 in words is "one billion, one hundred eighty-nine million, eight hundred seventy-eight thousand, four hundred eighty".