1166642213 has 8 divisors (see below), whose sum is σ = 1285302816. Its totient is φ = 1050082000.

The previous prime is 1166642209. The next prime is 1166642233. The reversal of 1166642213 is 3122466611.

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

It is not a de Polignac number, because 1166642213 - 2² = 1166642209 is a prime.

It is a super-2 number, since 2×1166642213² = 2722108106307074738, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1166642213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1166642233) 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, 523931 + ... + 526152.

It is an arithmetic number, because the mean of its divisors is an integer number (160662852).

Almost surely, 2^1166642213 is an apocalyptic number.

It is an amenable number.

1166642213 is a deficient number, since it is larger than the sum of its proper divisors (118660603).

1166642213 is a wasteful number, since it uses less digits than its factorization.

1166642213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1050195.

The product of its digits is 10368, while the sum is 32.

The square root of 1166642213 is about 34156.1445862966. The cubic root of 1166642213 is about 1052.7192444079.

The spelling of 1166642213 in words is "one billion, one hundred sixty-six million, six hundred forty-two thousand, two hundred thirteen".