1667211126 has 64 divisors (see below), whose sum is σ = 4109253120. Its totient is φ = 440259840.

The previous prime is 1667211113. The next prime is 1667211151. The reversal of 1667211126 is 6211127661.

It is a nude number because it is divisible by every one of its digits.

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 31 ways as a sum of consecutive naturals, for example, 7240 + ... + 58196.

It is an arithmetic number, because the mean of its divisors is an integer number (64207080).

Almost surely, 2^1667211126 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1667211126, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2054626560).

1667211126 is an abundant number, since it is smaller than the sum of its proper divisors (2442041994).

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

1667211126 is a wasteful number, since it uses less digits than its factorization.

1667211126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51029.

The product of its digits is 6048, while the sum is 33.

The square root of 1667211126 is about 40831.4967396494. The cubic root of 1667211126 is about 1185.7601930245.

Adding to 1667211126 its reverse (6211127661), we get a palindrome (7878338787).

The spelling of 1667211126 in words is "one billion, six hundred sixty-seven million, two hundred eleven thousand, one hundred twenty-six".