18963878763284 has 96 divisors (see below), whose sum is σ = 41332483449600. Its totient is φ = 7413228822528.

The previous prime is 18963878763233. The next prime is 18963878763343. The reversal of 18963878763284 is 48236787836981.

It is a junction number, because it is equal to n+sod(n) for n = 18963878763199 and 18963878763208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9561707 + ... + 11373389.

It is an arithmetic number, because the mean of its divisors is an integer number (430546702600).

Almost surely, 2^{18963878763284} is an apocalyptic number.

18963878763284 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18963878763284, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20666241724800).

18963878763284 is an abundant number, since it is smaller than the sum of its proper divisors (22368604686316).

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

18963878763284 is a wasteful number, since it uses less digits than its factorization.

18963878763284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1812049 (or 1812047 counting only the distinct ones).

The product of its digits is 4682022912, while the sum is 80.

The spelling of 18963878763284 in words is "eighteen trillion, nine hundred sixty-three billion, eight hundred seventy-eight million, seven hundred sixty-three thousand, two hundred eighty-four".