3685539937 has 4 divisors (see below), whose sum is σ = 3719352340. Its totient is φ = 3651727536.

The previous prime is 3685539931. The next prime is 3685539943. The reversal of 3685539937 is 7399355863.

3685539937 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 an emirpimes, since its reverse is a distinct semiprime: 7399355863 = 23197 ⋅318979.

It is an interprime number because it is at equal distance from previous prime (3685539931) and next prime (3685539943).

It can be written as a sum of positive squares in 2 ways, for example, as 1781177616 + 1904362321 = 42204^2 + 43639^2 .

It is a cyclic number.

It is not a de Polignac number, because 3685539937 - 2²³ = 3677151329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3685539931) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16906038 + ... + 16906255.

It is an arithmetic number, because the mean of its divisors is an integer number (929838085).

Almost surely, 2^3685539937 is an apocalyptic number.

It is an amenable number.

3685539937 is a deficient number, since it is larger than the sum of its proper divisors (33812403).

3685539937 is a wasteful number, since it uses less digits than its factorization.

3685539937 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33812402.

The product of its digits is 18370800, while the sum is 58.

The square root of 3685539937 is about 60708.6479589193. The cubic root of 3685539937 is about 1544.6628697841.

The spelling of 3685539937 in words is "three billion, six hundred eighty-five million, five hundred thirty-nine thousand, nine hundred thirty-seven".