1666967434 has 16 divisors (see below), whose sum is σ = 2728494720. Its totient is φ = 757509760.

The previous prime is 1666967399. The next prime is 1666967503. The reversal of 1666967434 is 4347696661.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101082 + ... + 116410.

It is an arithmetic number, because the mean of its divisors is an integer number (170530920).

Almost surely, 2^1666967434 is an apocalyptic number.

1666967434 is a deficient number, since it is larger than the sum of its proper divisors (1061527286).

1666967434 is a wasteful number, since it uses less digits than its factorization.

1666967434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20285.

The product of its digits is 3919104, while the sum is 52.

The square root of 1666967434 is about 40828.5125127037. The cubic root of 1666967434 is about 1185.7024170279.

The spelling of 1666967434 in words is "one billion, six hundred sixty-six million, nine hundred sixty-seven thousand, four hundred thirty-four".