1115526987 has 12 divisors (see below), whose sum is σ = 1641719664. Its totient is φ = 729652560.

The previous prime is 1115526931. The next prime is 1115527001. The reversal of 1115526987 is 7896255111.

1115526987 is a `hidden beast` number, since 1 + 1 + 1 + 552 + 6 + 98 + 7 = 666.

It is not a de Polignac number, because 1115526987 - 2¹¹ = 1115524939 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1115526787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1168839 + ... + 1169792.

It is an arithmetic number, because the mean of its divisors is an integer number (136809972).

Almost surely, 2^1115526987 is an apocalyptic number.

1115526987 is a deficient number, since it is larger than the sum of its proper divisors (526192677).

1115526987 is a wasteful number, since it uses less digits than its factorization.

1115526987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2338690 (or 2338687 counting only the distinct ones).

The product of its digits is 151200, while the sum is 45.

The square root of 1115526987 is about 33399.5057897568. The cubic root of 1115526987 is about 1037.1144702373.

The spelling of 1115526987 in words is "one billion, one hundred fifteen million, five hundred twenty-six thousand, nine hundred eighty-seven".