1666834351 has 16 divisors (see below), whose sum is σ = 2077465600. Its totient is φ = 1302114528.

The previous prime is 1666834321. The next prime is 1666834369. The reversal of 1666834351 is 1534386661.

It is a de Polignac number, because none of the positive numbers 2^k-1666834351 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1666834298 and 1666834307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1666834321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108741 + ... + 123118.

It is an arithmetic number, because the mean of its divisors is an integer number (129841600).

Almost surely, 2^1666834351 is an apocalyptic number.

1666834351 is a deficient number, since it is larger than the sum of its proper divisors (410631249).

1666834351 is a wasteful number, since it uses less digits than its factorization.

1666834351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231958.

The product of its digits is 311040, while the sum is 43.

The square root of 1666834351 is about 40826.8827000054. The cubic root of 1666834351 is about 1185.6708625154.

The spelling of 1666834351 in words is "one billion, six hundred sixty-six million, eight hundred thirty-four thousand, three hundred fifty-one".