1020387192318 has 128 divisors (see below), whose sum is σ = 2495431895040. Its totient is φ = 307097516160.

The previous prime is 1020387192317. The next prime is 1020387192343. The reversal of 1020387192318 is 8132917830201.

1020387192318 is a `hidden beast` number, since 1 + 0 + 20 + 387 + 19 + 231 + 8 = 666.

It is a super-2 number, since 2×1020387192318² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020387192317) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 59743596 + ... + 59760672.

It is an arithmetic number, because the mean of its divisors is an integer number (19495561680).

Almost surely, 2^{1020387192318} is an apocalyptic number.

1020387192318 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1020387192318, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1247715947520).

1020387192318 is an abundant number, since it is smaller than the sum of its proper divisors (1475044702722).

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

1020387192318 is a wasteful number, since it uses less digits than its factorization.

1020387192318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18959 (or 18953 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The spelling of 1020387192318 in words is "one trillion, twenty billion, three hundred eighty-seven million, one hundred ninety-two thousand, three hundred eighteen".