1002154203450 has 192 divisors, whose sum is σ = 2920103101440. Its totient is φ = 252312192000.

The previous prime is 1002154203431. The next prime is 1002154203451. The reversal of 1002154203450 is 543024512001.

1002154203450 is a `hidden beast` number, since 1 + 0 + 0 + 2 + 1 + 5 + 4 + 203 + 450 = 666.

1002154203450 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1002154203451) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1423822 + ... + 2007878.

It is an arithmetic number, because the mean of its divisors is an integer number (15208870320).

Almost surely, 2^{1002154203450} is an apocalyptic number.

1002154203450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1002154203450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1460051550720).

1002154203450 is an abundant number, since it is smaller than the sum of its proper divisors (1917948897990).

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

1002154203450 is a wasteful number, since it uses less digits than its factorization.

1002154203450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 584150 (or 584139 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

Adding to 1002154203450 its reverse (543024512001), we get a palindrome (1545178715451).

It can be divided in two parts, 1002154 and 203450, that added together give a square (1205604 = 1098²).

The spelling of 1002154203450 in words is "one trillion, two billion, one hundred fifty-four million, two hundred three thousand, four hundred fifty".