2091519 has 6 divisors (see below), whose sum is σ = 3021096. Its totient is φ = 1394340.

The previous prime is 2091503. The next prime is 2091521. The reversal of 2091519 is 9151902.

It is a happy number.

It is not a de Polignac number, because 2091519 - 2⁴ = 2091503 is a prime.

It is a super-2 number, since 2×2091519² = 8748903454722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2091492 and 2091501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2091599) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 116187 + ... + 116204.

It is an arithmetic number, because the mean of its divisors is an integer number (503516).

2^2091519 is an apocalyptic number.

2091519 is a deficient number, since it is larger than the sum of its proper divisors (929577).

2091519 is a wasteful number, since it uses less digits than its factorization.

2091519 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232397 (or 232394 counting only the distinct ones).

The product of its (nonzero) digits is 810, while the sum is 27.

The square root of 2091519 is about 1446.2084911934. The cubic root of 2091519 is about 127.8852935588.

It can be divided in two parts, 209 and 1519, that added together give a cube (1728 = 12³).

The spelling of 2091519 in words is "two million, ninety-one thousand, five hundred nineteen".