1618430424426 has 192 divisors, whose sum is σ = 3861550817280. Its totient is φ = 487970904960.

The previous prime is 1618430424419. The next prime is 1618430424427. The reversal of 1618430424426 is 6244240348161.

It is a happy number.

1618430424426 is a `hidden beast` number, since 1 + 6 + 1 + 84 + 304 + 244 + 26 = 666.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1618430424427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 309035080 + ... + 309040316.

It is an arithmetic number, because the mean of its divisors is an integer number (20112243840).

Almost surely, 2^{1618430424426} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1618430424426, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1930775408640).

1618430424426 is an abundant number, since it is smaller than the sum of its proper divisors (2243120392854).

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

1618430424426 is a wasteful number, since it uses less digits than its factorization.

1618430424426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5681 (or 5678 counting only the distinct ones).

The product of its (nonzero) digits is 884736, while the sum is 45.

The spelling of 1618430424426 in words is "one trillion, six hundred eighteen billion, four hundred thirty million, four hundred twenty-four thousand, four hundred twenty-six".