19484985707 has 4 divisors (see below), whose sum is σ = 21256348056. Its totient is φ = 17713623360.

The previous prime is 19484985691. The next prime is 19484985713. The reversal of 19484985707 is 70758948491.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 19484985707 - 2⁴ = 19484985691 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 19484985707.

It is not an unprimeable number, because it can be changed into a prime (19484945707) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 885681158 + ... + 885681179.

It is an arithmetic number, because the mean of its divisors is an integer number (5314087014).

Almost surely, 2^19484985707 is an apocalyptic number.

19484985707 is a deficient number, since it is larger than the sum of its proper divisors (1771362349).

19484985707 is a wasteful number, since it uses less digits than its factorization.

19484985707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1771362348.

The product of its (nonzero) digits is 20321280, while the sum is 62.

The spelling of 19484985707 in words is "nineteen billion, four hundred eighty-four million, nine hundred eighty-five thousand, seven hundred seven".