1825161660 has 480 divisors, whose sum is σ = 7083901440. Its totient is φ = 384072192.

The previous prime is 1825161659. The next prime is 1825161671. The reversal of 1825161660 is 661615281.

1825161660 is a `hidden beast` number, since 1 + 82 + 516 + 1 + 6 + 60 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 9264682 + ... + 9264878.

It is an arithmetic number, because the mean of its divisors is an integer number (14758128).

Almost surely, 2^1825161660 is an apocalyptic number.

1825161660 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 1825161660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3541950720).

1825161660 is an abundant number, since it is smaller than the sum of its proper divisors (5258739780).

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

1825161660 is a wasteful number, since it uses less digits than its factorization.

1825161660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287 (or 276 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 1825161660 is about 42721.9107718744. The cubic root of 1825161660 is about 1222.0822766428.

The spelling of 1825161660 in words is "one billion, eight hundred twenty-five million, one hundred sixty-one thousand, six hundred sixty".