19485707808 has 48 divisors (see below), whose sum is σ = 58457125440. Its totient is φ = 5567344896.

The previous prime is 19485707807. The next prime is 19485707809. The reversal of 19485707808 is 80870758491.

It is an interprime number because it is at equal distance from previous prime (19485707807) and next prime (19485707809).

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (19485707807) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14497623 + ... + 14498966.

It is an arithmetic number, because the mean of its divisors is an integer number (1217856780).

Almost surely, 2^19485707808 is an apocalyptic number.

It is an amenable number.

19485707808 is an abundant number, since it is smaller than the sum of its proper divisors (38971417632).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19485707808 is a wasteful number, since it uses less digits than its factorization.

19485707808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28996609 (or 28996601 counting only the distinct ones).

The product of its (nonzero) digits is 4515840, while the sum is 57.

The spelling of 19485707808 in words is "nineteen billion, four hundred eighty-five million, seven hundred seven thousand, eight hundred eight".