3618131 has 4 divisors (see below), whose sum is σ = 3947064. Its totient is φ = 3289200.

The previous prime is 3618101. The next prime is 3618137. The reversal of 3618131 is 1318163.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3618131 is a prime.

It is a super-2 number, since 2×3618131² = 26181743866322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3618097 and 3618106.

It is not an unprimeable number, because it can be changed into a prime (3618137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 164450 + ... + 164471.

It is an arithmetic number, because the mean of its divisors is an integer number (986766).

Almost surely, 2^3618131 is an apocalyptic number.

3618131 is a deficient number, since it is larger than the sum of its proper divisors (328933).

3618131 is a wasteful number, since it uses less digits than its factorization.

3618131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328932.

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

The square root of 3618131 is about 1902.1385333356. The cubic root of 3618131 is about 153.5187512239.

Subtracting from 3618131 its reverse (1318163), we obtain a cube (2299968 = 132³).

The spelling of 3618131 in words is "three million, six hundred eighteen thousand, one hundred thirty-one".