1685006153738 has 8 divisors (see below), whose sum is σ = 2552048155488. Its totient is φ = 834323435244.

The previous prime is 1685006153729. The next prime is 1685006153749. The reversal of 1685006153738 is 8373516005861.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1685006153738.

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, 4089820556 + ... + 4089820967.

It is an arithmetic number, because the mean of its divisors is an integer number (319006019436).

Almost surely, 2^{1685006153738} is an apocalyptic number.

1685006153738 is a deficient number, since it is larger than the sum of its proper divisors (867042001750).

1685006153738 is a wasteful number, since it uses less digits than its factorization.

1685006153738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8179641628.

The product of its (nonzero) digits is 3628800, while the sum is 53.

The spelling of 1685006153738 in words is "one trillion, six hundred eighty-five billion, six million, one hundred fifty-three thousand, seven hundred thirty-eight".