1115138866 has 8 divisors (see below), whose sum is σ = 1711608624. Its totient is φ = 544602660.

The previous prime is 1115138837. The next prime is 1115138933. The reversal of 1115138866 is 6688315111.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 6483280 + ... + 6483451.

It is an arithmetic number, because the mean of its divisors is an integer number (213951078).

Almost surely, 2^1115138866 is an apocalyptic number.

1115138866 is a deficient number, since it is larger than the sum of its proper divisors (596469758).

1115138866 is a wasteful number, since it uses less digits than its factorization.

1115138866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12966776.

The product of its digits is 34560, while the sum is 40.

The square root of 1115138866 is about 33393.6950036979. The cubic root of 1115138866 is about 1036.9941765399.

The spelling of 1115138866 in words is "one billion, one hundred fifteen million, one hundred thirty-eight thousand, eight hundred sixty-six".