2730919 has 2 divisors, whose sum is σ = 2730920. Its totient is φ = 2730918.

The previous prime is 2730911. The next prime is 2730929. The reversal of 2730919 is 9190372.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2730919 - 2³ = 2730911 is a prime.

It is a super-2 number, since 2×2730919² = 14915837169122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2730911) 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, 1365459 + 1365460.

It is an arithmetic number, because the mean of its divisors is an integer number (1365460).

2^2730919 is an apocalyptic number.

2730919 is a deficient number, since it is larger than the sum of its proper divisors (1).

2730919 is an equidigital number, since it uses as much as digits as its factorization.

2730919 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3402, while the sum is 31.

The square root of 2730919 is about 1652.5492428367. The cubic root of 2730919 is about 139.7771795664. Note that the first 3 decimals are identical.

The spelling of 2730919 in words is "two million, seven hundred thirty thousand, nine hundred nineteen".