1963913 has 8 divisors (see below), whose sum is σ = 2260032. Its totient is φ = 1671696.

The previous prime is 1963889. The next prime is 1963921. The reversal of 1963913 is 3193691.

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

It is a cyclic number.

It is not a de Polignac number, because 1963913 - 2⁸ = 1963657 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1963913.

It is not an unprimeable number, because it can be changed into a prime (1963513) 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, 206 + ... + 1992.

It is an arithmetic number, because the mean of its divisors is an integer number (282504).

2^1963913 is an apocalyptic number.

It is an amenable number.

1963913 is a deficient number, since it is larger than the sum of its proper divisors (296119).

1963913 is a wasteful number, since it uses less digits than its factorization.

1963913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1951.

The product of its digits is 4374, while the sum is 32.

The square root of 1963913 is about 1401.3968031932. The cubic root of 1963913 is about 125.2297215654.

The spelling of 1963913 in words is "one million, nine hundred sixty-three thousand, nine hundred thirteen".