20930189423 has 16 divisors (see below), whose sum is σ = 25883491200. Its totient is φ = 16639382880.

The previous prime is 20930189417. The next prime is 20930189447. The reversal of 20930189423 is 32498103902.

It is a cyclic number.

It is not a de Polignac number, because 20930189423 - 2¹⁰ = 20930188399 is a prime.

It is a super-2 number, since 2×20930189423² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20930189023) 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, 3848993 + ... + 3854426.

It is an arithmetic number, because the mean of its divisors is an integer number (1617718200).

Almost surely, 2^20930189423 is an apocalyptic number.

20930189423 is a deficient number, since it is larger than the sum of its proper divisors (4953301777).

20930189423 is a wasteful number, since it uses less digits than its factorization.

20930189423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7703462.

The product of its (nonzero) digits is 93312, while the sum is 41.

The spelling of 20930189423 in words is "twenty billion, nine hundred thirty million, one hundred eighty-nine thousand, four hundred twenty-three".