1666330434 has 16 divisors (see below), whose sum is σ = 3702956640. Its totient is φ = 555443460.

The previous prime is 1666330399. The next prime is 1666330439. The reversal of 1666330434 is 4340336661.

It is not an unprimeable number, because it can be changed into a prime (1666330439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15428932 + ... + 15429039.

It is an arithmetic number, because the mean of its divisors is an integer number (231434790).

Almost surely, 2^1666330434 is an apocalyptic number.

1666330434 is an abundant number, since it is smaller than the sum of its proper divisors (2036626206).

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

1666330434 is a wasteful number, since it uses less digits than its factorization.

1666330434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30857982 (or 30857976 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 36.

The square root of 1666330434 is about 40820.7108463339. The cubic root of 1666330434 is about 1185.5513665532.

The spelling of 1666330434 in words is "one billion, six hundred sixty-six million, three hundred thirty thousand, four hundred thirty-four".