1215166670 has 32 divisors (see below), whose sum is σ = 2285826048. Its totient is φ = 464653728.

The previous prime is 1215166661. The next prime is 1215166709. The reversal of 1215166670 is 766615121.

It is a self number, because there is not a number n which added to its sum of digits gives 1215166670.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 9854 + ... + 50273.

It is an arithmetic number, because the mean of its divisors is an integer number (71432064).

Almost surely, 2^1215166670 is an apocalyptic number.

1215166670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1215166670 is a deficient number, since it is larger than the sum of its proper divisors (1070659378).

1215166670 is a wasteful number, since it uses less digits than its factorization.

1215166670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60224.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 1215166670 is about 34859.2408121577. The cubic root of 1215166670 is about 1067.1167814953.

The spelling of 1215166670 in words is "one billion, two hundred fifteen million, one hundred sixty-six thousand, six hundred seventy".