1606235140 has 24 divisors (see below), whose sum is σ = 3571511832. Its totient is φ = 604700160.

The previous prime is 1606235117. The next prime is 1606235143. The reversal of 1606235140 is 415326061.

It can be written as a sum of positive squares in 4 ways, for example, as 476199684 + 1130035456 = 21822^2 + 33616^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1606235099 and 1606235108.

It is not an unprimeable number, because it can be changed into a prime (1606235143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2361771 + ... + 2362450.

It is an arithmetic number, because the mean of its divisors is an integer number (148812993).

Almost surely, 2^1606235140 is an apocalyptic number.

1606235140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1606235140 is an abundant number, since it is smaller than the sum of its proper divisors (1965276692).

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

1606235140 is a wasteful number, since it uses less digits than its factorization.

1606235140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4724247 (or 4724245 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 1606235140 is about 40077.8634660083. The cubic root of 1606235140 is about 1171.1244309853.

The spelling of 1606235140 in words is "one billion, six hundred six million, two hundred thirty-five thousand, one hundred forty".