1668426835 has 16 divisors (see below), whose sum is σ = 2125375200. Its totient is φ = 1252973056.

The previous prime is 1668426797. The next prime is 1668426847. The reversal of 1668426835 is 5386248661.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1668426835 - 2⁷ = 1668426707 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7836 + ... + 58294.

It is an arithmetic number, because the mean of its divisors is an integer number (132835950).

Almost surely, 2^1668426835 is an apocalyptic number.

1668426835 is a deficient number, since it is larger than the sum of its proper divisors (456948365).

1668426835 is a wasteful number, since it uses less digits than its factorization.

1668426835 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50870.

The product of its digits is 1658880, while the sum is 49.

The square root of 1668426835 is about 40846.3809290370. The cubic root of 1668426835 is about 1186.0483367143.

The spelling of 1668426835 in words is "one billion, six hundred sixty-eight million, four hundred twenty-six thousand, eight hundred thirty-five".