38166820535 has 4 divisors (see below), whose sum is σ = 45800184648. Its totient is φ = 30533456424.

The previous prime is 38166820507. The next prime is 38166820543. The reversal of 38166820535 is 53502866183.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 38166820535 - 2³⁴ = 20986951351 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 38166820535.

It is a congruent number.

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, 3816682049 + ... + 3816682058.

It is an arithmetic number, because the mean of its divisors is an integer number (11450046162).

Almost surely, 2^38166820535 is an apocalyptic number.

38166820535 is a deficient number, since it is larger than the sum of its proper divisors (7633364113).

38166820535 is an equidigital number, since it uses as much as digits as its factorization.

38166820535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7633364112.

The product of its (nonzero) digits is 1036800, while the sum is 47.

The spelling of 38166820535 in words is "thirty-eight billion, one hundred sixty-six million, eight hundred twenty thousand, five hundred thirty-five".