1061665166 has 16 divisors (see below), whose sum is σ = 1676952960. Its totient is φ = 502702200.

The previous prime is 1061665151. The next prime is 1061665177. The reversal of 1061665166 is 6615661601.

It is a happy number.

It is a super-2 number, since 2×1061665166² = 2254265849395615112, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 173735 + ... + 179741.

It is an arithmetic number, because the mean of its divisors is an integer number (104809560).

Almost surely, 2^1061665166 is an apocalyptic number.

1061665166 is a deficient number, since it is larger than the sum of its proper divisors (615287794).

1061665166 is a wasteful number, since it uses less digits than its factorization.

1061665166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10679.

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 1061665166 is about 32583.2037405778. The cubic root of 1061665166 is about 1020.1464502009.

The spelling of 1061665166 in words is "one billion, sixty-one million, six hundred sixty-five thousand, one hundred sixty-six".