2154419 has 2 divisors, whose sum is σ = 2154420. Its totient is φ = 2154418.

The previous prime is 2154413. The next prime is 2154487. The reversal of 2154419 is 9144512.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2154419 is a prime.

It is a super-2 number, since 2×2154419² = 9283042455122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2154413) 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, 1077209 + 1077210.

It is an arithmetic number, because the mean of its divisors is an integer number (1077210).

2^2154419 is an apocalyptic number.

2154419 is a deficient number, since it is larger than the sum of its proper divisors (1).

2154419 is an equidigital number, since it uses as much as digits as its factorization.

2154419 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 2154419 is about 1467.7939228652. The cubic root of 2154419 is about 129.1546529698.

The spelling of 2154419 in words is "two million, one hundred fifty-four thousand, four hundred nineteen".