1668518434 has 8 divisors (see below), whose sum is σ = 2730302928. Its totient is φ = 758417460.

The previous prime is 1668518429. The next prime is 1668518443. The reversal of 1668518434 is 4348158661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37920852 + ... + 37920895.

It is an arithmetic number, because the mean of its divisors is an integer number (341287866).

Almost surely, 2^1668518434 is an apocalyptic number.

1668518434 is a deficient number, since it is larger than the sum of its proper divisors (1061784494).

1668518434 is a wasteful number, since it uses less digits than its factorization.

1668518434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75841760.

The product of its digits is 552960, while the sum is 46.

The square root of 1668518434 is about 40847.5021757757. The cubic root of 1668518434 is about 1186.0700415625.

The spelling of 1668518434 in words is "one billion, six hundred sixty-eight million, five hundred eighteen thousand, four hundred thirty-four".