20014394819 has 4 divisors (see below), whose sum is σ = 21067784040. Its totient is φ = 18961005600.

The previous prime is 20014394791. The next prime is 20014394887. The reversal of 20014394819 is 91849341002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20014394819 - 2⁸ = 20014394563 is a prime.

It is a super-2 number, since 2×20014394819² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20014391819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 526694582 + ... + 526694619.

It is an arithmetic number, because the mean of its divisors is an integer number (5266946010).

Almost surely, 2^20014394819 is an apocalyptic number.

20014394819 is a deficient number, since it is larger than the sum of its proper divisors (1053389221).

20014394819 is a wasteful number, since it uses less digits than its factorization.

20014394819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1053389220.

The product of its (nonzero) digits is 62208, while the sum is 41.

The spelling of 20014394819 in words is "twenty billion, fourteen million, three hundred ninety-four thousand, eight hundred nineteen".