1606500000 has 672 divisors, whose sum is σ = 7087409280. Its totient is φ = 345600000.

The previous prime is 1606499963. The next prime is 1606500019. The reversal of 1606500000 is 56061.

1606500000 is a `hidden beast` number, since 16 + 0 + 650 + 0 + 0 + 0 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (672).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 94499992 + ... + 94500008.

It is an arithmetic number, because the mean of its divisors is an integer number (10546740).

Almost surely, 2^1606500000 is an apocalyptic number.

1606500000 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 1606500000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3543704640).

1606500000 is an abundant number, since it is smaller than the sum of its proper divisors (5480909280).

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

1606500000 is an frugal number, since it uses more digits than its factorization.

1606500000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73 (or 34 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 1606500000 is about 40081.1676476622. The cubic root of 1606500000 is about 1171.1887982670.

Adding to 1606500000 its reverse (56061), we get a palindrome (1606556061).

The spelling of 1606500000 in words is "one billion, six hundred six million, five hundred thousand".