20162144891 has 8 divisors (see below), whose sum is σ = 24397889760. Its totient is φ = 16265259648.

The previous prime is 20162144881. The next prime is 20162144911. The reversal of 20162144891 is 19844126102.

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

It is a cyclic number.

It is not a de Polignac number, because 20162144891 - 2¹⁸ = 20161882747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20162144881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84714776 + ... + 84715013.

It is an arithmetic number, because the mean of its divisors is an integer number (3049736220).

Almost surely, 2^20162144891 is an apocalyptic number.

20162144891 is a deficient number, since it is larger than the sum of its proper divisors (4235744869).

20162144891 is a wasteful number, since it uses less digits than its factorization.

20162144891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169429813.

The product of its (nonzero) digits is 27648, while the sum is 38.

The spelling of 20162144891 in words is "twenty billion, one hundred sixty-two million, one hundred forty-four thousand, eight hundred ninety-one".