19692419908 has 48 divisors (see below), whose sum is σ = 39690201600. Its totient is φ = 8374294656.

The previous prime is 19692419839. The next prime is 19692419909. The reversal of 19692419908 is 80991429691.

It is a happy number.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (19692419909) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5534466 + ... + 5538022.

It is an arithmetic number, because the mean of its divisors is an integer number (826879200).

Almost surely, 2^19692419908 is an apocalyptic number.

It is an amenable number.

19692419908 is an abundant number, since it is smaller than the sum of its proper divisors (19997781692).

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

19692419908 is a wasteful number, since it uses less digits than its factorization.

19692419908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5044 (or 5042 counting only the distinct ones).

The product of its (nonzero) digits is 2519424, while the sum is 58.

The spelling of 19692419908 in words is "nineteen billion, six hundred ninety-two million, four hundred nineteen thousand, nine hundred eight".