1618348295520 has 768 divisors, whose sum is σ = 6887041459200. Its totient is φ = 349811343360.

The previous prime is 1618348295519. The next prime is 1618348295549. The reversal of 1618348295520 is 255928438161.

1618348295520 is a `hidden beast` number, since 1 + 6 + 1 + 8 + 3 + 4 + 82 + 9 + 552 + 0 = 666.

It is a super-2 number, since 2×1618348295520² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 15296242 + ... + 15401678.

It is an arithmetic number, because the mean of its divisors is an integer number (8967501900).

Almost surely, 2^{1618348295520} is an apocalyptic number.

1618348295520 is a gapful number since it is divisible by the number (10) 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 1618348295520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3443520729600).

1618348295520 is an abundant number, since it is smaller than the sum of its proper divisors (5268693163680).

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

1618348295520 is a wasteful number, since it uses less digits than its factorization.

1618348295520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105508 (or 105494 counting only the distinct ones).

The product of its (nonzero) digits is 4147200, while the sum is 54.

The spelling of 1618348295520 in words is "one trillion, six hundred eighteen billion, three hundred forty-eight million, two hundred ninety-five thousand, five hundred twenty".