1985018954041 has 4 divisors (see below), whose sum is σ = 1985079901072. Its totient is φ = 1984958007012.

The previous prime is 1985018953997. The next prime is 1985018954071. The reversal of 1985018954041 is 1404598105891.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1985018954041 - 2⁹ = 1985018953529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1985018954071) 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, 30424635 + ... + 30489808.

It is an arithmetic number, because the mean of its divisors is an integer number (496269975268).

Almost surely, 2^{1985018954041} is an apocalyptic number.

It is an amenable number.

1985018954041 is a deficient number, since it is larger than the sum of its proper divisors (60947031).

1985018954041 is an equidigital number, since it uses as much as digits as its factorization.

1985018954041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60947030.

The product of its (nonzero) digits is 2073600, while the sum is 55.

The spelling of 1985018954041 in words is "one trillion, nine hundred eighty-five billion, eighteen million, nine hundred fifty-four thousand, forty-one".