3638141 has 4 divisors (see below), whose sum is σ = 3918012. Its totient is φ = 3358272.

The previous prime is 3638113. The next prime is 3638147. The reversal of 3638141 is 1418363.

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 2493241 + 1144900 = 1579^2 + 1070^2 .

It is a cyclic number.

It is not a de Polignac number, because 3638141 - 2⁶ = 3638077 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3638141.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3638147) 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, 139916 + ... + 139941.

It is an arithmetic number, because the mean of its divisors is an integer number (979503).

Almost surely, 2^3638141 is an apocalyptic number.

It is an amenable number.

3638141 is a deficient number, since it is larger than the sum of its proper divisors (279871).

3638141 is a wasteful number, since it uses less digits than its factorization.

3638141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279870.

The product of its digits is 1728, while the sum is 26.

The square root of 3638141 is about 1907.3911502364. The cubic root of 3638141 is about 153.8012418710.

The spelling of 3638141 in words is "three million, six hundred thirty-eight thousand, one hundred forty-one".