3840865090 has 16 divisors (see below), whose sum is σ = 6916028472. Its totient is φ = 1535796864.

The previous prime is 3840865073. The next prime is 3840865099. The reversal of 3840865090 is 905680483.

It can be written as a sum of positive squares in 4 ways, for example, as 3556571769 + 284293321 = 59637^2 + 16861^2 .

It is not an unprimeable number, because it can be changed into a prime (3840865099) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38649 + ... + 95788.

Almost surely, 2^3840865090 is an apocalyptic number.

3840865090 is a deficient number, since it is larger than the sum of its proper divisors (3075163382).

3840865090 is a wasteful number, since it uses less digits than its factorization.

3840865090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137301.

The product of its (nonzero) digits is 207360, while the sum is 43.

The square root of 3840865090 is about 61974.7133111562. The cubic root of 3840865090 is about 1566.0646418341.

The spelling of 3840865090 in words is "three billion, eight hundred forty million, eight hundred sixty-five thousand, ninety".