19834877485 has 4 divisors (see below), whose sum is σ = 23801852988. Its totient is φ = 15867901984.

The previous prime is 19834877437. The next prime is 19834877507. The reversal of 19834877485 is 58477843891.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13536391716 + 6298485769 = 116346^2 + 79363^2 .

It is a cyclic number.

It is not a de Polignac number, because 19834877485 - 2¹⁵ = 19834844717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1983487744 + ... + 1983487753.

It is an arithmetic number, because the mean of its divisors is an integer number (5950463247).

Almost surely, 2^19834877485 is an apocalyptic number.

It is an amenable number.

19834877485 is a deficient number, since it is larger than the sum of its proper divisors (3966975503).

19834877485 is an equidigital number, since it uses as much as digits as its factorization.

19834877485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3966975502.

The product of its digits is 54190080, while the sum is 64.

The spelling of 19834877485 in words is "nineteen billion, eight hundred thirty-four million, eight hundred seventy-seven thousand, four hundred eighty-five".