2189741564923 has 8 divisors (see below), whose sum is σ = 2399521130496. Its totient is φ = 1981747357800.

The previous prime is 2189741564921. The next prime is 2189741564929. The reversal of 2189741564923 is 3294651479812.

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 2189741564923 - 2¹ = 2189741564921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2189741564921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 446337043 + ... + 446341948.

It is an arithmetic number, because the mean of its divisors is an integer number (299940141312).

Almost surely, 2^{2189741564923} is an apocalyptic number.

2189741564923 is a deficient number, since it is larger than the sum of its proper divisors (209779565573).

2189741564923 is a wasteful number, since it uses less digits than its factorization.

2189741564923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 892679225.

The product of its digits is 26127360, while the sum is 61.

The spelling of 2189741564923 in words is "two trillion, one hundred eighty-nine billion, seven hundred forty-one million, five hundred sixty-four thousand, nine hundred twenty-three".