1156214540 has 48 divisors (see below), whose sum is σ = 2768647392. Its totient is φ = 401796096.

The previous prime is 1156214513. The next prime is 1156214551. The reversal of 1156214540 is 454126511.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 126374 + ... + 135213.

It is an arithmetic number, because the mean of its divisors is an integer number (57680154).

Almost surely, 2^1156214540 is an apocalyptic number.

1156214540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1156214540 is an abundant number, since it is smaller than the sum of its proper divisors (1612432852).

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

1156214540 is a wasteful number, since it uses less digits than its factorization.

1156214540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261626 (or 261624 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 29.

The square root of 1156214540 is about 34003.1548536309. The cubic root of 1156214540 is about 1049.5733837561.

The spelling of 1156214540 in words is "one billion, one hundred fifty-six million, two hundred fourteen thousand, five hundred forty".