1156015140 has 48 divisors (see below), whose sum is σ = 3699249792. Its totient is φ = 264231936.

The previous prime is 1156015117. The next prime is 1156015151. The reversal of 1156015140 is 415106511.

1156015140 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 1156015140.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1375789 + ... + 1376628.

It is an arithmetic number, because the mean of its divisors is an integer number (77067704).

Almost surely, 2^1156015140 is an apocalyptic number.

1156015140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1156015140 is an abundant number, since it is smaller than the sum of its proper divisors (2543234652).

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

1156015140 is a wasteful number, since it uses less digits than its factorization.

1156015140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2752436 (or 2752434 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 24.

The square root of 1156015140 is about 34000.2226463298. Note that the first 3 decimals coincide. The cubic root of 1156015140 is about 1049.5130440418.

The spelling of 1156015140 in words is "one billion, one hundred fifty-six million, fifteen thousand, one hundred forty".