3656850541 has 4 divisors (see below), whose sum is σ = 3693057084. Its totient is φ = 3620644000.

The previous prime is 3656850499. The next prime is 3656850581. The reversal of 3656850541 is 1450586563.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1508157225 + 2148693316 = 38835^2 + 46354^2 .

It is a cyclic number.

It is not a de Polignac number, because 3656850541 - 2²⁵ = 3623296109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3656850581) 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, 18103120 + ... + 18103321.

It is an arithmetic number, because the mean of its divisors is an integer number (923264271).

Almost surely, 2^3656850541 is an apocalyptic number.

It is an amenable number.

3656850541 is a deficient number, since it is larger than the sum of its proper divisors (36206543).

3656850541 is a wasteful number, since it uses less digits than its factorization.

3656850541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36206542.

The product of its (nonzero) digits is 432000, while the sum is 43.

The square root of 3656850541 is about 60471.8987712475. The cubic root of 3656850541 is about 1540.6443782539.

The spelling of 3656850541 in words is "three billion, six hundred fifty-six million, eight hundred fifty thousand, five hundred forty-one".