1180009940 has 24 divisors (see below), whose sum is σ = 2585761920. Its totient is φ = 451481888.

The previous prime is 1180009939. The next prime is 1180009949. The reversal of 1180009940 is 499000811.

It is a junction number, because it is equal to n+sod(n) for n = 1180009897 and 1180009906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1180009949) 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, 1282160 + ... + 1283079.

It is an arithmetic number, because the mean of its divisors is an integer number (107740080).

Almost surely, 2^1180009940 is an apocalyptic number.

1180009940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1180009940 is an abundant number, since it is smaller than the sum of its proper divisors (1405751980).

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

1180009940 is a wasteful number, since it uses less digits than its factorization.

1180009940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2565271 (or 2565269 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 32.

The square root of 1180009940 is about 34351.2727566243. The cubic root of 1180009940 is about 1056.7247724297.

The spelling of 1180009940 in words is "one billion, one hundred eighty million, nine thousand, nine hundred forty".