20189754361 has 16 divisors (see below), whose sum is σ = 24081562368. Its totient is φ = 16550107200.

The previous prime is 20189754349. The next prime is 20189754413. The reversal of 20189754361 is 16345798102.

It is a cyclic number.

It is not a de Polignac number, because 20189754361 - 2⁹ = 20189753849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20189754301) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1568331 + ... + 1581151.

It is an arithmetic number, because the mean of its divisors is an integer number (1505097648).

It is a 1-persistent number, because it is pandigital, but 2⋅20189754361 = 40379508722 is not.

Almost surely, 2^20189754361 is an apocalyptic number.

It is an amenable number.

20189754361 is a deficient number, since it is larger than the sum of its proper divisors (3891808007).

20189754361 is a wasteful number, since it uses less digits than its factorization.

20189754361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22632.

The product of its (nonzero) digits is 362880, while the sum is 46.

The spelling of 20189754361 in words is "twenty billion, one hundred eighty-nine million, seven hundred fifty-four thousand, three hundred sixty-one".