1016666851 has 4 divisors (see below), whose sum is σ = 1022543712. Its totient is φ = 1010789992.

The previous prime is 1016666789. The next prime is 1016666857. The reversal of 1016666851 is 1586666101.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1586666101 = 89 ⋅17827709.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1016666851 is a prime.

It is a super-2 number, since 2×1016666851² = 2067222971844512402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1016666857) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2938171 + ... + 2938516.

It is an arithmetic number, because the mean of its divisors is an integer number (255635928).

Almost surely, 2^1016666851 is an apocalyptic number.

1016666851 is a deficient number, since it is larger than the sum of its proper divisors (5876861).

1016666851 is an equidigital number, since it uses as much as digits as its factorization.

1016666851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5876860.

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 1016666851 is about 31885.2136734255. The cubic root of 1016666851 is about 1005.5250347717.

The spelling of 1016666851 in words is "one billion, sixteen million, six hundred sixty-six thousand, eight hundred fifty-one".