1965830 has 8 divisors (see below), whose sum is σ = 3538512. Its totient is φ = 786328.

The previous prime is 1965781. The next prime is 1965851. The reversal of 1965830 is 385691.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent 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, 98282 + ... + 98301.

It is an arithmetic number, because the mean of its divisors is an integer number (442314).

2^1965830 is an apocalyptic number.

1965830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1965830 is a deficient number, since it is larger than the sum of its proper divisors (1572682).

1965830 is a wasteful number, since it uses less digits than its factorization.

1965830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196590.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 1965830 is about 1402.0805968274. The cubic root of 1965830 is about 125.2704544133.

The spelling of 1965830 in words is "one million, nine hundred sixty-five thousand, eight hundred thirty".