2103919 has 2 divisors, whose sum is σ = 2103920. Its totient is φ = 2103918.

The previous prime is 2103911. The next prime is 2103953. The reversal of 2103919 is 9193012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2103919 - 2³ = 2103911 is a prime.

It is a super-2 number, since 2×2103919² = 8852950317122, which contains 22 as substring.

2103919 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 2103893 and 2103902.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2103911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1051959 + 1051960.

It is an arithmetic number, because the mean of its divisors is an integer number (1051960).

2^2103919 is an apocalyptic number.

2103919 is a deficient number, since it is larger than the sum of its proper divisors (1).

2103919 is an equidigital number, since it uses as much as digits as its factorization.

2103919 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 486, while the sum is 25.

The square root of 2103919 is about 1450.4892278125. The cubic root of 2103919 is about 128.1375271511.

The spelling of 2103919 in words is "two million, one hundred three thousand, nine hundred nineteen".