3613811 has 2 divisors, whose sum is σ = 3613812. Its totient is φ = 3613810.

The previous prime is 3613807. The next prime is 3613837. The reversal of 3613811 is 1183163.

It is a weak prime.

It is an emirp because it is prime and its reverse (1183163) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3613811 - 2² = 3613807 is a prime.

It is not a weakly prime, because it can be changed into another prime (3613871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1806905 + 1806906.

It is an arithmetic number, because the mean of its divisors is an integer number (1806906).

Almost surely, 2^3613811 is an apocalyptic number.

3613811 is a deficient number, since it is larger than the sum of its proper divisors (1).

3613811 is an equidigital number, since it uses as much as digits as its factorization.

3613811 is an evil number, because the sum of its binary digits is even.

The product of its digits is 432, while the sum is 23.

The square root of 3613811 is about 1901.0026301928. The cubic root of 3613811 is about 153.4576271121.

Adding to 3613811 its reverse (1183163), we get a palindrome (4796974).

The spelling of 3613811 in words is "three million, six hundred thirteen thousand, eight hundred eleven".