1115611506 has 24 divisors (see below), whose sum is σ = 2453237904. Its totient is φ = 366319800.

The previous prime is 1115611501. The next prime is 1115611513. The reversal of 1115611506 is 6051165111.

1115611506 is a `hidden beast` number, since 1 + 1 + 156 + 1 + 1 + 506 = 666.

1115611506 is digitally balanced in base 4, 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 1115611506.

It is not an unprimeable number, because it can be changed into a prime (1115611501) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 461320 + ... + 463731.

It is an arithmetic number, because the mean of its divisors is an integer number (102218246).

Almost surely, 2^1115611506 is an apocalyptic number.

1115611506 is an abundant number, since it is smaller than the sum of its proper divisors (1337626398).

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

1115611506 is a wasteful number, since it uses less digits than its factorization.

1115611506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 925126 (or 925123 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 27.

The square root of 1115611506 is about 33400.7710390045. The cubic root of 1115611506 is about 1037.1406622419.

Adding to 1115611506 its reverse (6051165111), we get a palindrome (7166776617).

The spelling of 1115611506 in words is "one billion, one hundred fifteen million, six hundred eleven thousand, five hundred six".