1963859420 has 48 divisors (see below), whose sum is σ = 4209623040. Its totient is φ = 769414464.

The previous prime is 1963859413. The next prime is 1963859473. The reversal of 1963859420 is 249583691.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 195767 + ... + 205553.

It is an arithmetic number, because the mean of its divisors is an integer number (87700480).

Almost surely, 2^1963859420 is an apocalyptic number.

1963859420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1963859420 is an abundant number, since it is smaller than the sum of its proper divisors (2245763620).

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

1963859420 is a wasteful number, since it uses less digits than its factorization.

1963859420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10002 (or 10000 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 47.

The square root of 1963859420 is about 44315.4535122907. The cubic root of 1963859420 is about 1252.2858270478.

The spelling of 1963859420 in words is "one billion, nine hundred sixty-three million, eight hundred fifty-nine thousand, four hundred twenty".