20201838199 has 16 divisors (see below), whose sum is σ = 20927554560. Its totient is φ = 19486323360.

The previous prime is 20201838187. The next prime is 20201838263. The reversal of 20201838199 is 99183810202.

It is a cyclic number.

It is not a de Polignac number, because 20201838199 - 2²⁵ = 20168283767 is a prime.

It is a super-2 number, since 2×20201838199² (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 (20201838499) 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, 2048322 + ... + 2058160.

It is an arithmetic number, because the mean of its divisors is an integer number (1307972160).

Almost surely, 2^20201838199 is an apocalyptic number.

20201838199 is a deficient number, since it is larger than the sum of its proper divisors (725716361).

20201838199 is a wasteful number, since it uses less digits than its factorization.

20201838199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10350.

The product of its (nonzero) digits is 62208, while the sum is 43.

The spelling of 20201838199 in words is "twenty billion, two hundred one million, eight hundred thirty-eight thousand, one hundred ninety-nine".