1118215870 has 16 divisors (see below), whose sum is σ = 2016336240. Its totient is φ = 446497984.

The previous prime is 1118215867. The next prime is 1118215877. The reversal of 1118215870 is 785128111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1118215877) 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 7 ways as a sum of consecutive naturals, for example, 92572 + ... + 103951.

It is an arithmetic number, because the mean of its divisors is an integer number (126021015).

Almost surely, 2^1118215870 is an apocalyptic number.

1118215870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1118215870 is a deficient number, since it is larger than the sum of its proper divisors (898120370).

1118215870 is a wasteful number, since it uses less digits than its factorization.

1118215870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197099.

The product of its (nonzero) digits is 4480, while the sum is 34.

The square root of 1118215870 is about 33439.7348972745. The cubic root of 1118215870 is about 1037.9470937032.

The spelling of 1118215870 in words is "one billion, one hundred eighteen million, two hundred fifteen thousand, eight hundred seventy".