1909687922368 has 28 divisors (see below), whose sum is σ = 3789813189472. Its totient is φ = 954774362880.

The previous prime is 1909687922347. The next prime is 1909687922371. The reversal of 1909687922368 is 8632297869091.

It is a junction number, because it is equal to n+sod(n) for n = 1909687922297 and 1909687922306.

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, 196923 + ... + 1964218.

Almost surely, 2^{1909687922368} is an apocalyptic number.

It is an amenable number.

1909687922368 is a deficient number, since it is larger than the sum of its proper divisors (1880125267104).

1909687922368 is a wasteful number, since it uses less digits than its factorization.

1909687922368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2174960 (or 2174950 counting only the distinct ones).

The product of its (nonzero) digits is 141087744, while the sum is 70.

The spelling of 1909687922368 in words is "one trillion, nine hundred nine billion, six hundred eighty-seven million, nine hundred twenty-two thousand, three hundred sixty-eight".