1965155 has 4 divisors (see below), whose sum is σ = 2358192. Its totient is φ = 1572120.

The previous prime is 1965133. The next prime is 1965167. The reversal of 1965155 is 5515691.

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

It is not a de Polignac number, because 1965155 - 2⁶ = 1965091 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 196511 + ... + 196520.

It is an arithmetic number, because the mean of its divisors is an integer number (589548).

2^1965155 is an apocalyptic number.

1965155 is a deficient number, since it is larger than the sum of its proper divisors (393037).

1965155 is an equidigital number, since it uses as much as digits as its factorization.

1965155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393036.

The product of its digits is 6750, while the sum is 32.

The square root of 1965155 is about 1401.8398624665. The cubic root of 1965155 is about 125.2561148829.

The spelling of 1965155 in words is "one million, nine hundred sixty-five thousand, one hundred fifty-five".