2618531 has 2 divisors, whose sum is σ = 2618532. Its totient is φ = 2618530.

The previous prime is 2618521. The next prime is 2618533. The reversal of 2618531 is 1358162.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2618531 - 2⁶ = 2618467 is a prime.

It is a super-2 number, since 2×2618531² = 13713409195922, which contains 22 as substring.

Together with 2618533, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2618531.

It is not a weakly prime, because it can be changed into another prime (2618533) 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 as a sum of consecutive naturals, namely, 1309265 + 1309266.

It is an arithmetic number, because the mean of its divisors is an integer number (1309266).

2^2618531 is an apocalyptic number.

2618531 is a deficient number, since it is larger than the sum of its proper divisors (1).

2618531 is an equidigital number, since it uses as much as digits as its factorization.

2618531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1440, while the sum is 26.

The square root of 2618531 is about 1618.1875663841. The cubic root of 2618531 is about 137.8327982692.

The spelling of 2618531 in words is "two million, six hundred eighteen thousand, five hundred thirty-one".