2619391 has 2 divisors, whose sum is σ = 2619392. Its totient is φ = 2619390.

The previous prime is 2619389. The next prime is 2619413. The reversal of 2619391 is 1939162.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2619391 - 2¹ = 2619389 is a prime.

It is a super-2 number, since 2×2619391² = 13722418421762, which contains 22 as substring.

Together with 2619389, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2619301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1309695 + 1309696.

It is an arithmetic number, because the mean of its divisors is an integer number (1309696).

2^2619391 is an apocalyptic number.

2619391 is a deficient number, since it is larger than the sum of its proper divisors (1).

2619391 is an equidigital number, since it uses as much as digits as its factorization.

2619391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2916, while the sum is 31.

The square root of 2619391 is about 1618.4532739625. The cubic root of 2619391 is about 137.8478860203.

The spelling of 2619391 in words is "two million, six hundred nineteen thousand, three hundred ninety-one".