2801819 has 2 divisors, whose sum is σ = 2801820. Its totient is φ = 2801818.

The previous prime is 2801803. The next prime is 2801833. The reversal of 2801819 is 9181082.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2801819 - 2⁴ = 2801803 is a prime.

It is a super-2 number, since 2×2801819² = 15700379417522, which contains 22 as substring.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 2801791 and 2801800.

It is not a weakly prime, because it can be changed into another prime (2801119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1400909 + 1400910.

It is an arithmetic number, because the mean of its divisors is an integer number (1400910).

2^2801819 is an apocalyptic number.

2801819 is a deficient number, since it is larger than the sum of its proper divisors (1).

2801819 is an equidigital number, since it uses as much as digits as its factorization.

2801819 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 29.

The square root of 2801819 is about 1673.8634950318. The cubic root of 2801819 is about 140.9764895495.

The spelling of 2801819 in words is "two million, eight hundred one thousand, eight hundred nineteen".