1618174894432 has 144 divisors (see below), whose sum is σ = 3518543499408. Its totient is φ = 731821178880.

The previous prime is 1618174894429. The next prime is 1618174894463. The reversal of 1618174894432 is 2344984718161.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25372408 + ... + 25436104.

It is an arithmetic number, because the mean of its divisors is an integer number (24434329857).

Almost surely, 2^{1618174894432} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1618174894432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1759271749704).

1618174894432 is an abundant number, since it is smaller than the sum of its proper divisors (1900368604976).

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

1618174894432 is a wasteful number, since it uses less digits than its factorization.

1618174894432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63849 (or 63824 counting only the distinct ones).

The product of its digits is 9289728, while the sum is 58.

The spelling of 1618174894432 in words is "one trillion, six hundred eighteen billion, one hundred seventy-four million, eight hundred ninety-four thousand, four hundred thirty-two".