1965730 has 16 divisors (see below), whose sum is σ = 3810744. Its totient is φ = 725760.

The previous prime is 1965709. The next prime is 1965731. The reversal of 1965730 is 375691.

It can be written as a sum of positive squares in 4 ways, for example, as 927369 + 1038361 = 963^2 + 1019^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1965692 and 1965701.

It is not an unprimeable number, because it can be changed into a prime (1965731) 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, 7431 + ... + 7690.

2^1965730 is an apocalyptic number.

1965730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1965730 is a deficient number, since it is larger than the sum of its proper divisors (1845014).

1965730 is a wasteful number, since it uses less digits than its factorization.

1965730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15141.

The product of its (nonzero) digits is 5670, while the sum is 31.

The square root of 1965730 is about 1402.0449350859. The cubic root of 1965730 is about 125.2683302455.

The spelling of 1965730 in words is "one million, nine hundred sixty-five thousand, seven hundred thirty".