1898478974611 has 2 divisors, whose sum is σ = 1898478974612. Its totient is φ = 1898478974610.

The previous prime is 1898478974593. The next prime is 1898478974669. The reversal of 1898478974611 is 1164798748981.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1898478974611 - 2¹⁷ = 1898478843539 is a prime.

It is not a weakly prime, because it can be changed into another prime (1898478474611) 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, 949239487305 + 949239487306.

It is an arithmetic number, because the mean of its divisors is an integer number (949239487306).

Almost surely, 2^{1898478974611} is an apocalyptic number.

1898478974611 is a deficient number, since it is larger than the sum of its proper divisors (1).

1898478974611 is an equidigital number, since it uses as much as digits as its factorization.

1898478974611 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 195084288, while the sum is 73.

The spelling of 1898478974611 in words is "one trillion, eight hundred ninety-eight billion, four hundred seventy-eight million, nine hundred seventy-four thousand, six hundred eleven".