3861537 has 4 divisors (see below), whose sum is σ = 5148720. Its totient is φ = 2574356.

The previous prime is 3861521. The next prime is 3861547. The reversal of 3861537 is 7351683.

It is a happy number.

3861537 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3861537 - 2⁴ = 3861521 is a prime.

It is a super-2 number, since 2×3861537² = 29822936004738, which contains 22 as substring.

It is a D-number.

3861537 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 3861498 and 3861507.

It is not an unprimeable number, because it can be changed into a prime (3861547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 643587 + ... + 643592.

It is an arithmetic number, because the mean of its divisors is an integer number (1287180).

Almost surely, 2^3861537 is an apocalyptic number.

It is an amenable number.

3861537 is a deficient number, since it is larger than the sum of its proper divisors (1287183).

3861537 is a wasteful number, since it uses less digits than its factorization.

3861537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1287182.

The product of its digits is 15120, while the sum is 33.

The square root of 3861537 is about 1965.0793877093. The cubic root of 3861537 is about 156.8869187201.

The spelling of 3861537 in words is "three million, eight hundred sixty-one thousand, five hundred thirty-seven".