1963987297244 has 12 divisors (see below), whose sum is σ = 3927974594544. Its totient is φ = 841708841664.

The previous prime is 1963987297229. The next prime is 1963987297381. The reversal of 1963987297244 is 4427927893691.

1963987297244 is an admirable number.

It is a super-2 number, since 2×1963987297244² (a number of 25 digits) contains 22 as substring.

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, 35071201709 + ... + 35071201764.

It is an arithmetic number, because the mean of its divisors is an integer number (327331216212).

Almost surely, 2^{1963987297244} is an apocalyptic number.

1963987297244 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1963987297244 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1963987297244 is a wasteful number, since it uses less digits than its factorization.

1963987297244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70142403484 (or 70142403482 counting only the distinct ones).

The product of its digits is 329204736, while the sum is 71.

The spelling of 1963987297244 in words is "one trillion, nine hundred sixty-three billion, nine hundred eighty-seven million, two hundred ninety-seven thousand, two hundred forty-four".