2190955 has 16 divisors (see below), whose sum is σ = 2911104. Its totient is φ = 1572480.

The previous prime is 2190901. The next prime is 2190959. The reversal of 2190955 is 5590912.

It is a de Polignac number, because none of the positive numbers 2^k-2190955 is a prime.

It is a Duffinian number.

2190955 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2190959) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1950 + ... + 2860.

It is an arithmetic number, because the mean of its divisors is an integer number (181944).

2^2190955 is an apocalyptic number.

2190955 is a deficient number, since it is larger than the sum of its proper divisors (720149).

2190955 is a wasteful number, since it uses less digits than its factorization.

2190955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 966.

The product of its (nonzero) digits is 4050, while the sum is 31.

The square root of 2190955 is about 1480.1874881244. The cubic root of 2190955 is about 129.8806597096.

The spelling of 2190955 in words is "two million, one hundred ninety thousand, nine hundred fifty-five".