1166216570 has 8 divisors (see below), whose sum is σ = 2099189844. Its totient is φ = 466486624.

The previous prime is 1166216563. The next prime is 1166216591. The reversal of 1166216570 is 756126611.

It can be written as a sum of positive squares in 2 ways, for example, as 996096721 + 170119849 = 31561^2 + 13043^2 .

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

It is a super-2 number, since 2×1166216570² = 2720122176285129800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1166216570.

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, 58310819 + ... + 58310838.

Almost surely, 2^1166216570 is an apocalyptic number.

1166216570 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1166216570 is a deficient number, since it is larger than the sum of its proper divisors (932973274).

1166216570 is a wasteful number, since it uses less digits than its factorization.

1166216570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116621664.

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

The square root of 1166216570 is about 34149.9131770492. The cubic root of 1166216570 is about 1052.5912025579.

The spelling of 1166216570 in words is "one billion, one hundred sixty-six million, two hundred sixteen thousand, five hundred seventy".