1178944240 has 40 divisors (see below), whose sum is σ = 2799374400. Its totient is φ = 461542656.

The previous prime is 1178944199. The next prime is 1178944241. The reversal of 1178944240 is 424498711.

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

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

It is a junction number, because it is equal to n+sod(n) for n = 1178944193 and 1178944202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1178944241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 153015 + ... + 160534.

It is an arithmetic number, because the mean of its divisors is an integer number (69984360).

Almost surely, 2^1178944240 is an apocalyptic number.

1178944240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1178944240 is an abundant number, since it is smaller than the sum of its proper divisors (1620430160).

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

1178944240 is a wasteful number, since it uses less digits than its factorization.

1178944240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313609 (or 313603 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 1178944240 is about 34335.7574548749. The cubic root of 1178944240 is about 1056.4065573758.

The spelling of 1178944240 in words is "one billion, one hundred seventy-eight million, nine hundred forty-four thousand, two hundred forty".