1963864 has 16 divisors (see below), whose sum is σ = 4208400. Its totient is φ = 841632.

The previous prime is 1963813. The next prime is 1963873. The reversal of 1963864 is 4683691.

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, 17479 + ... + 17590.

It is an arithmetic number, because the mean of its divisors is an integer number (263025).

2^1963864 is an apocalyptic number.

1963864 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1963864 is an abundant number, since it is smaller than the sum of its proper divisors (2244536).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1963864 is a wasteful number, since it uses less digits than its factorization.

1963864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35082 (or 35078 counting only the distinct ones).

The product of its digits is 31104, while the sum is 37.

The square root of 1963864 is about 1401.3793205267. The cubic root of 1963864 is about 125.2286800550.

The spelling of 1963864 in words is "one million, nine hundred sixty-three thousand, eight hundred sixty-four".