19698645802 has 16 divisors (see below), whose sum is σ = 32480214624. Its totient is φ = 8885578000.

The previous prime is 19698645779. The next prime is 19698645817. The reversal of 19698645802 is 20854689691.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3414649 + ... + 3420412.

It is an arithmetic number, because the mean of its divisors is an integer number (2030013414).

Almost surely, 2^19698645802 is an apocalyptic number.

19698645802 is a deficient number, since it is larger than the sum of its proper divisors (12781568822).

19698645802 is a wasteful number, since it uses less digits than its factorization.

19698645802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6835205.

The product of its (nonzero) digits is 7464960, while the sum is 58.

The spelling of 19698645802 in words is "nineteen billion, six hundred ninety-eight million, six hundred forty-five thousand, eight hundred two".