38849570645 has 4 divisors (see below), whose sum is σ = 46619484780. Its totient is φ = 31079656512.

The previous prime is 38849570609. The next prime is 38849570659. The reversal of 38849570645 is 54607594883.

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

It can be written as a sum of positive squares in 2 ways, for example, as 21878255569 + 16971315076 = 147913^2 + 130274^2 .

It is a cyclic number.

It is not a de Polignac number, because 38849570645 - 2¹² = 38849566549 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3884957060 + ... + 3884957069.

It is an arithmetic number, because the mean of its divisors is an integer number (11654871195).

Almost surely, 2^38849570645 is an apocalyptic number.

It is an amenable number.

38849570645 is a deficient number, since it is larger than the sum of its proper divisors (7769914135).

38849570645 is an equidigital number, since it uses as much as digits as its factorization.

38849570645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7769914134.

The product of its (nonzero) digits is 29030400, while the sum is 59.

The spelling of 38849570645 in words is "thirty-eight billion, eight hundred forty-nine million, five hundred seventy thousand, six hundred forty-five".