1178579440 has 40 divisors (see below), whose sum is σ = 2807039088. Its totient is φ = 459932160.

The previous prime is 1178579429. The next prime is 1178579449. The reversal of 1178579440 is 449758711.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1178579449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 176382 + ... + 182941.

Almost surely, 2^1178579440 is an apocalyptic number.

1178579440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1178579440 is an abundant number, since it is smaller than the sum of its proper divisors (1628459648).

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

1178579440 is a wasteful number, since it uses less digits than its factorization.

1178579440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359377 (or 359371 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 46.

The square root of 1178579440 is about 34330.4447975845. Note that the first 3 decimals coincide. The cubic root of 1178579440 is about 1056.2975850555.

The spelling of 1178579440 in words is "one billion, one hundred seventy-eight million, five hundred seventy-nine thousand, four hundred forty".