2651819 has 2 divisors, whose sum is σ = 2651820. Its totient is φ = 2651818.

The previous prime is 2651807. The next prime is 2651821. The reversal of 2651819 is 9181562.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2651819 is a prime.

It is a super-2 number, since 2×2651819² = 14064288017522, which contains 22 as substring.

Together with 2651821, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2651899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1325909 + 1325910.

It is an arithmetic number, because the mean of its divisors is an integer number (1325910).

2^2651819 is an apocalyptic number.

2651819 is a deficient number, since it is larger than the sum of its proper divisors (1).

2651819 is an equidigital number, since it uses as much as digits as its factorization.

2651819 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4320, while the sum is 32.

The square root of 2651819 is about 1628.4406651764. The cubic root of 2651819 is about 138.4144057922.

The spelling of 2651819 in words is "two million, six hundred fifty-one thousand, eight hundred nineteen".