3858505645 has 16 divisors (see below), whose sum is σ = 4840093440. Its totient is φ = 2947356544.

The previous prime is 3858505643. The next prime is 3858505649. The reversal of 3858505645 is 5465058583.

It is a cyclic number.

It is not a de Polignac number, because 3858505645 - 2¹ = 3858505643 is a prime.

It is a super-3 number, since 3×3858505645³ (a number of 30 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3858505643) 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, 35952 + ... + 94918.

It is an arithmetic number, because the mean of its divisors is an integer number (302505840).

Almost surely, 2^3858505645 is an apocalyptic number.

It is an amenable number.

3858505645 is a deficient number, since it is larger than the sum of its proper divisors (981587795).

3858505645 is a wasteful number, since it uses less digits than its factorization.

3858505645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59564.

The product of its (nonzero) digits is 2880000, while the sum is 49.

The square root of 3858505645 is about 62116.8708564751. The cubic root of 3858505645 is about 1568.4585523979.

The spelling of 3858505645 in words is "three billion, eight hundred fifty-eight million, five hundred five thousand, six hundred forty-five".