1051565166 has 40 divisors (see below), whose sum is σ = 2380612080. Its totient is φ = 346902912.

The previous prime is 1051565161. The next prime is 1051565173. The reversal of 1051565166 is 6615651501.

It is a super-2 number, since 2×1051565166² = 2211578596689215112, 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 1051565166.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1051565161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 17746 + ... + 49173.

It is an arithmetic number, because the mean of its divisors is an integer number (59515302).

Almost surely, 2^1051565166 is an apocalyptic number.

1051565166 is an abundant number, since it is smaller than the sum of its proper divisors (1329046914).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1051565166 is an equidigital number, since it uses as much as digits as its factorization.

1051565166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67030 (or 67021 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 36.

The square root of 1051565166 is about 32427.8455343552. The cubic root of 1051565166 is about 1016.9011311723.

The spelling of 1051565166 in words is "one billion, fifty-one million, five hundred sixty-five thousand, one hundred sixty-six".