1963995860 has 24 divisors (see below), whose sum is σ = 4166914920. Its totient is φ = 777498624.

The previous prime is 1963995827. The next prime is 1963995877. The reversal of 1963995860 is 685993691.

It can be written as a sum of positive squares in 4 ways, for example, as 122899396 + 1841096464 = 11086^2 + 42908^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1963995796 and 1963995805.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 504245 + ... + 508124.

It is an arithmetic number, because the mean of its divisors is an integer number (173621455).

Almost surely, 2^1963995860 is an apocalyptic number.

1963995860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1963995860 is an abundant number, since it is smaller than the sum of its proper divisors (2202919060).

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

1963995860 is a wasteful number, since it uses less digits than its factorization.

1963995860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1012475 (or 1012473 counting only the distinct ones).

The product of its (nonzero) digits is 3149280, while the sum is 56.

The square root of 1963995860 is about 44316.9929033999. The cubic root of 1963995860 is about 1252.3148274131.

The spelling of 1963995860 in words is "one billion, nine hundred sixty-three million, nine hundred ninety-five thousand, eight hundred sixty".