3640123411 has 4 divisors (see below), whose sum is σ = 3641529832. Its totient is φ = 3638716992.

The previous prime is 3640123393. The next prime is 3640123423. The reversal of 3640123411 is 1143210463.

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

It is a cyclic number.

It is not a de Polignac number, because 3640123411 - 2²⁹ = 3103252499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3640123111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 699321 + ... + 704506.

It is an arithmetic number, because the mean of its divisors is an integer number (910382458).

Almost surely, 2^3640123411 is an apocalyptic number.

3640123411 is a deficient number, since it is larger than the sum of its proper divisors (1406421).

3640123411 is a wasteful number, since it uses less digits than its factorization.

3640123411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1406420.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 3640123411 is about 60333.4352660281. The cubic root of 3640123411 is about 1538.2917206128.

Adding to 3640123411 its reverse (1143210463), we get a palindrome (4783333874).

The spelling of 3640123411 in words is "three billion, six hundred forty million, one hundred twenty-three thousand, four hundred eleven".