1605216150 has 96 divisors (see below), whose sum is σ = 4489534080. Its totient is φ = 421644960.

The previous prime is 1605216139. The next prime is 1605216163. The reversal of 1605216150 is 516125061.

It is a happy number.

1605216150 is a `hidden beast` number, since 1 + 605 + 2 + 1 + 6 + 1 + 50 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 81577 + ... + 99323.

It is an arithmetic number, because the mean of its divisors is an integer number (46765980).

Almost surely, 2^1605216150 is an apocalyptic number.

1605216150 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 1605216150, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2244767040).

1605216150 is an abundant number, since it is smaller than the sum of its proper divisors (2884317930).

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

1605216150 is a wasteful number, since it uses less digits than its factorization.

1605216150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17835 (or 17824 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

The square root of 1605216150 is about 40065.1488203900. The cubic root of 1605216150 is about 1170.8767261716.

The spelling of 1605216150 in words is "one billion, six hundred five million, two hundred sixteen thousand, one hundred fifty".