1965955 has 4 divisors (see below), whose sum is σ = 2359152. Its totient is φ = 1572760.

The previous prime is 1965941. The next prime is 1965959. The reversal of 1965955 is 5595691.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1965955 - 2⁵ = 1965923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1965959) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 196591 + ... + 196600.

It is an arithmetic number, because the mean of its divisors is an integer number (589788).

2^1965955 is an apocalyptic number.

1965955 is a deficient number, since it is larger than the sum of its proper divisors (393197).

1965955 is an equidigital number, since it uses as much as digits as its factorization.

1965955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393196.

The product of its digits is 60750, while the sum is 40.

The square root of 1965955 is about 1402.1251727289. The cubic root of 1965955 is about 125.2731095216.

The spelling of 1965955 in words is "one million, nine hundred sixty-five thousand, nine hundred fifty-five".