1180129878 has 32 divisors (see below), whose sum is σ = 2626389120. Its totient is φ = 392794920.

The previous prime is 1180129861. The next prime is 1180129891. The reversal of 1180129878 is 8789210811.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21501 + ... + 53127.

It is an arithmetic number, because the mean of its divisors is an integer number (82074660).

Almost surely, 2^1180129878 is an apocalyptic number.

1180129878 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1180129878 is an abundant number, since it is smaller than the sum of its proper divisors (1446259242).

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

1180129878 is a wasteful number, since it uses less digits than its factorization.

1180129878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32329 (or 32323 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 45.

The square root of 1180129878 is about 34353.0184699977. The cubic root of 1180129878 is about 1056.7605735863.

The spelling of 1180129878 in words is "one billion, one hundred eighty million, one hundred twenty-nine thousand, eight hundred seventy-eight".