20492008199 has 16 divisors (see below), whose sum is σ = 23371780320. Its totient is φ = 17798952960.

The previous prime is 20492008177. The next prime is 20492008219. The reversal of 20492008199 is 99180029402.

It is a cyclic number.

It is not a de Polignac number, because 20492008199 - 2¹⁶ = 20491942663 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20492008499) 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, 1365167 + ... + 1380095.

It is an arithmetic number, because the mean of its divisors is an integer number (1460736270).

Almost surely, 2^20492008199 is an apocalyptic number.

20492008199 is a deficient number, since it is larger than the sum of its proper divisors (2879772121).

20492008199 is a wasteful number, since it uses less digits than its factorization.

20492008199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21170.

The product of its (nonzero) digits is 93312, while the sum is 44.

The spelling of 20492008199 in words is "twenty billion, four hundred ninety-two million, eight thousand, one hundred ninety-nine".