1115643506 has 16 divisors (see below), whose sum is σ = 1680307200. Its totient is φ = 555546768.

The previous prime is 1115643493. The next prime is 1115643509. The reversal of 1115643506 is 6053465111.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1115643509) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 670031 + ... + 671693.

It is an arithmetic number, because the mean of its divisors is an integer number (105019200).

Almost surely, 2^1115643506 is an apocalyptic number.

1115643506 is a deficient number, since it is larger than the sum of its proper divisors (564663694).

1115643506 is a wasteful number, since it uses less digits than its factorization.

1115643506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2833.

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 1115643506 is about 33401.2500664272. The cubic root of 1115643506 is about 1037.1505785326.

The spelling of 1115643506 in words is "one billion, one hundred fifteen million, six hundred forty-three thousand, five hundred six".