2261919 has 8 divisors (see below), whose sum is σ = 3290112. Its totient is φ = 1370840.

The previous prime is 2261911. The next prime is 2261927. The reversal of 2261919 is 9191622.

It is a happy number.

2261919 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2261911) and next prime (2261927).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2261919 - 2³ = 2261911 is a prime.

It is a super-2 number, since 2×2261919² = 10232555125122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2261911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34239 + ... + 34304.

It is an arithmetic number, because the mean of its divisors is an integer number (411264).

2^2261919 is an apocalyptic number.

2261919 is a deficient number, since it is larger than the sum of its proper divisors (1028193).

2261919 is a wasteful number, since it uses less digits than its factorization.

2261919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68557.

The product of its digits is 1944, while the sum is 30.

The square root of 2261919 is about 1503.9677523139. The cubic root of 2261919 is about 131.2680446846.

It can be divided in two parts, 226 and 1919, that added together give a triangular number (2145 = T₆₅).

The spelling of 2261919 in words is "two million, two hundred sixty-one thousand, nine hundred nineteen".