2018797051949 has 2 divisors, whose sum is σ = 2018797051950. Its totient is φ = 2018797051948.

The previous prime is 2018797051853. The next prime is 2018797052009. The reversal of 2018797051949 is 9491507978102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2012851562500 + 5945489449 = 1418750^2 + 77107^2 .

It is a cyclic number.

It is not a de Polignac number, because 2018797051949 - 2¹⁶ = 2018796986413 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2018797051891 and 2018797051900.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2018797011949) 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 as a sum of consecutive naturals, namely, 1009398525974 + 1009398525975.

It is an arithmetic number, because the mean of its divisors is an integer number (1009398525975).

Almost surely, 2^{2018797051949} is an apocalyptic number.

It is an amenable number.

2018797051949 is a deficient number, since it is larger than the sum of its proper divisors (1).

2018797051949 is an equidigital number, since it uses as much as digits as its factorization.

2018797051949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11430720, while the sum is 62.

The spelling of 2018797051949 in words is "two trillion, eighteen billion, seven hundred ninety-seven million, fifty-one thousand, nine hundred forty-nine".