38840661849 has 16 divisors (see below), whose sum is σ = 56501213184. Its totient is φ = 23537418000.

The previous prime is 38840661817. The next prime is 38840661919. The reversal of 38840661849 is 94816604883.

38840661849 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 38840661849 - 2⁵ = 38840661817 is a prime.

It is not an unprimeable number, because it can be changed into a prime (38840661049) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 305824 + ... + 413774.

It is an arithmetic number, because the mean of its divisors is an integer number (3531325824).

Almost surely, 2^38840661849 is an apocalyptic number.

It is an amenable number.

38840661849 is a deficient number, since it is larger than the sum of its proper divisors (17660551335).

38840661849 is a wasteful number, since it uses less digits than its factorization.

38840661849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118868.

The product of its (nonzero) digits is 7962624, while the sum is 57.

The spelling of 38840661849 in words is "thirty-eight billion, eight hundred forty million, six hundred sixty-one thousand, eight hundred forty-nine".