20235784019 has 16 divisors (see below), whose sum is σ = 22239360000. Its totient is φ = 18259713120.

The previous prime is 20235784013. The next prime is 20235784027. The reversal of 20235784019 is 91048753202.

It is not a de Polignac number, because 20235784019 - 2⁴ = 20235784003 is a prime.

It is a super-2 number, since 2×20235784019² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20235784013) 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, 2879492 + ... + 2886510.

It is an arithmetic number, because the mean of its divisors is an integer number (1389960000).

Almost surely, 2^20235784019 is an apocalyptic number.

20235784019 is a deficient number, since it is larger than the sum of its proper divisors (2003575981).

20235784019 is a wasteful number, since it uses less digits than its factorization.

20235784019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8938.

The product of its (nonzero) digits is 120960, while the sum is 41.

The spelling of 20235784019 in words is "twenty billion, two hundred thirty-five million, seven hundred eighty-four thousand, nineteen".