20402301019 has 2 divisors, whose sum is σ = 20402301020. Its totient is φ = 20402301018.

The previous prime is 20402301013. The next prime is 20402301043. The reversal of 20402301019 is 91010320402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20402301019 - 2⁹ = 20402300507 is a prime.

It is a super-2 number, since 2×20402301019² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20402301013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10201150509 + 10201150510.

It is an arithmetic number, because the mean of its divisors is an integer number (10201150510).

Almost surely, 2^20402301019 is an apocalyptic number.

20402301019 is a deficient number, since it is larger than the sum of its proper divisors (1).

20402301019 is an equidigital number, since it uses as much as digits as its factorization.

20402301019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 22.

The spelling of 20402301019 in words is "twenty billion, four hundred two million, three hundred one thousand, nineteen".