1666834434 has 24 divisors (see below), whose sum is σ = 3615580800. Its totient is φ = 554979768.

The previous prime is 1666834417. The next prime is 1666834447. The reversal of 1666834434 is 4344386661.

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 1666834434.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36234 + ... + 68165.

It is an arithmetic number, because the mean of its divisors is an integer number (150649200).

Almost surely, 2^1666834434 is an apocalyptic number.

1666834434 is an abundant number, since it is smaller than the sum of its proper divisors (1948746366).

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

1666834434 is a wasteful number, since it uses less digits than its factorization.

1666834434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105294 (or 105291 counting only the distinct ones).

The product of its digits is 995328, while the sum is 45.

The square root of 1666834434 is about 40826.8837164925. The cubic root of 1666834434 is about 1185.6708821956.

The spelling of 1666834434 in words is "one billion, six hundred sixty-six million, eight hundred thirty-four thousand, four hundred thirty-four".