1150215140 has 12 divisors (see below), whose sum is σ = 2415451836. Its totient is φ = 460086048.

The previous prime is 1150215133. The next prime is 1150215191. The reversal of 1150215140 is 415120511.

It can be written as a sum of positive squares in 2 ways, for example, as 759994624 + 390220516 = 27568^2 + 19754^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 57510757 = 1150215140 / (1 + 1 + 5 + 0 + 2 + 1 + 5 + 1 + 4 + 0).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28755359 + ... + 28755398.

It is an arithmetic number, because the mean of its divisors is an integer number (201287653).

Almost surely, 2^1150215140 is an apocalyptic number.

1150215140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1150215140 is an abundant number, since it is smaller than the sum of its proper divisors (1265236696).

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

1150215140 is a wasteful number, since it uses less digits than its factorization.

1150215140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57510766 (or 57510764 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 20.

The square root of 1150215140 is about 33914.8218335288. The cubic root of 1150215140 is about 1047.7548824111.

Adding to 1150215140 its reverse (415120511), we get a palindrome (1565335651).

The spelling of 1150215140 in words is "one billion, one hundred fifty million, two hundred fifteen thousand, one hundred forty".