1178340880 has 20 divisors (see below), whose sum is σ = 2739642732. Its totient is φ = 471336320.

The previous prime is 1178340871. The next prime is 1178340893. The reversal of 1178340880 is 880438711.

It can be written as a sum of positive squares in 2 ways, for example, as 211877136 + 966463744 = 14556^2 + 31088^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-3 number, since 3×1178340880³ (a number of 28 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7364551 + ... + 7364710.

Almost surely, 2^1178340880 is an apocalyptic number.

1178340880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1178340880 is an abundant number, since it is smaller than the sum of its proper divisors (1561301852).

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

1178340880 is a wasteful number, since it uses less digits than its factorization.

1178340880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14729274 (or 14729268 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 40.

The square root of 1178340880 is about 34326.9701546758. The cubic root of 1178340880 is about 1056.2263107323.

The spelling of 1178340880 in words is "one billion, one hundred seventy-eight million, three hundred forty thousand, eight hundred eighty".