2190819 has 8 divisors (see below), whose sum is σ = 3048192. Its totient is φ = 1397000.

The previous prime is 2190817. The next prime is 2190821. The reversal of 2190819 is 9180912.

It is an interprime number because it is at equal distance from previous prime (2190817) and next prime (2190821).

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 2190819 - 2¹ = 2190817 is a prime.

It is a super-2 number, since 2×2190819² = 9599375781522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2190817) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15807 + ... + 15944.

It is an arithmetic number, because the mean of its divisors is an integer number (381024).

2^2190819 is an apocalyptic number.

2190819 is a deficient number, since it is larger than the sum of its proper divisors (857373).

2190819 is a wasteful number, since it uses less digits than its factorization.

2190819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31777.

The product of its (nonzero) digits is 1296, while the sum is 30.

The square root of 2190819 is about 1480.1415472853. The cubic root of 2190819 is about 129.8779722765.

The spelling of 2190819 in words is "two million, one hundred ninety thousand, eight hundred nineteen".