1666072134 has 24 divisors (see below), whose sum is σ = 3618664920. Its totient is φ = 553997088.

The previous prime is 1666072099. The next prime is 1666072141. The reversal of 1666072134 is 4312706661.

It is a happy number.

1666072134 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

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, 105792 + ... + 120515.

It is an arithmetic number, because the mean of its divisors is an integer number (150777705).

Almost surely, 2^1666072134 is an apocalyptic number.

1666072134 is an abundant number, since it is smaller than the sum of its proper divisors (1952592786).

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

1666072134 is a wasteful number, since it uses less digits than its factorization.

1666072134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226724 (or 226721 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 1666072134 is about 40817.5468885625. The cubic root of 1666072134 is about 1185.4901054459.

Adding to 1666072134 its reverse (4312706661), we get a palindrome (5978778795).

The spelling of 1666072134 in words is "one billion, six hundred sixty-six million, seventy-two thousand, one hundred thirty-four".