1667166028 has 12 divisors (see below), whose sum is σ = 3182771592. Its totient is φ = 757802720.

The previous prime is 1667165987. The next prime is 1667166031. The reversal of 1667166028 is 8206617661.

It is a happy 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 3 ways as a sum of consecutive naturals, for example, 18945025 + ... + 18945112.

It is an arithmetic number, because the mean of its divisors is an integer number (265230966).

Almost surely, 2^1667166028 is an apocalyptic number.

It is an amenable number.

1667166028 is a deficient number, since it is larger than the sum of its proper divisors (1515605564).

1667166028 is a wasteful number, since it uses less digits than its factorization.

1667166028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37890152 (or 37890150 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 1667166028 is about 40830.9444906679. The cubic root of 1667166028 is about 1185.7495013382.

The spelling of 1667166028 in words is "one billion, six hundred sixty-seven million, one hundred sixty-six thousand, twenty-eight".