3852997861 has 8 divisors (see below), whose sum is σ = 4102187544. Its totient is φ = 3606312960.

The previous prime is 3852997853. The next prime is 3852997871. The reversal of 3852997861 is 1687992583.

It can be written as a sum of positive squares in 4 ways, for example, as 76895361 + 3776102500 = 8769^2 + 61450^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3852997861 - 2³ = 3852997853 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3852997796 and 3852997805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3852997801) 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, 623020 + ... + 629173.

It is an arithmetic number, because the mean of its divisors is an integer number (512773443).

Almost surely, 2^3852997861 is an apocalyptic number.

It is an amenable number.

3852997861 is a deficient number, since it is larger than the sum of its proper divisors (249189683).

3852997861 is a wasteful number, since it uses less digits than its factorization.

3852997861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1252391.

The product of its digits is 6531840, while the sum is 58.

The square root of 3852997861 is about 62072.5209815100. The cubic root of 3852997861 is about 1567.7119037036.

The spelling of 3852997861 in words is "three billion, eight hundred fifty-two million, nine hundred ninety-seven thousand, eight hundred sixty-one".