19678562692 has 12 divisors (see below), whose sum is σ = 34499315340. Its totient is φ = 9821615456.

The previous prime is 19678562671. The next prime is 19678562719. The reversal of 19678562692 is 29626587691.

It can be written as a sum of positive squares in 2 ways, for example, as 7358894656 + 12319668036 = 85784^2 + 110994^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 19678562692.

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, 4413967 + ... + 4418422.

It is an arithmetic number, because the mean of its divisors is an integer number (2874942945).

Almost surely, 2^19678562692 is an apocalyptic number.

It is an amenable number.

19678562692 is a deficient number, since it is larger than the sum of its proper divisors (14820752648).

19678562692 is a wasteful number, since it uses less digits than its factorization.

19678562692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8832950 (or 8832948 counting only the distinct ones).

The product of its digits is 19595520, while the sum is 61.

The spelling of 19678562692 in words is "nineteen billion, six hundred seventy-eight million, five hundred sixty-two thousand, six hundred ninety-two".