1666934358 has 32 divisors (see below), whose sum is σ = 3353205600. Its totient is φ = 552431616.

The previous prime is 1666934351. The next prime is 1666934359. The reversal of 1666934358 is 8534396661.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1666934358.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1666934351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1182358 + ... + 1183766.

It is an arithmetic number, because the mean of its divisors is an integer number (104787675).

Almost surely, 2^1666934358 is an apocalyptic number.

1666934358 is an abundant number, since it is smaller than the sum of its proper divisors (1686271242).

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

1666934358 is a wasteful number, since it uses less digits than its factorization.

1666934358 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2416.

The product of its digits is 2799360, while the sum is 51.

The square root of 1666934358 is about 40828.1074506277. The cubic root of 1666934358 is about 1185.6945747326.

The spelling of 1666934358 in words is "one billion, six hundred sixty-six million, nine hundred thirty-four thousand, three hundred fifty-eight".