1683742660 has 12 divisors (see below), whose sum is σ = 3535859628. Its totient is φ = 673497056.

The previous prime is 1683742657. The next prime is 1683742663. The reversal of 1683742660 is 662473861.

It is an interprime number because it is at equal distance from previous prime (1683742657) and next prime (1683742663).

It can be written as a sum of positive squares in 2 ways, for example, as 982446336 + 701296324 = 31344^2 + 26482^2 .

It is not an unprimeable number, because it can be changed into a prime (1683742663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42093547 + ... + 42093586.

It is an arithmetic number, because the mean of its divisors is an integer number (294654969).

Almost surely, 2^1683742660 is an apocalyptic number.

1683742660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1683742660 is an abundant number, since it is smaller than the sum of its proper divisors (1852116968).

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

1683742660 is a wasteful number, since it uses less digits than its factorization.

1683742660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84187142 (or 84187140 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 43.

The square root of 1683742660 is about 41033.4334415242. The cubic root of 1683742660 is about 1189.6665167275. Note that the first 3 decimals are identical.

The spelling of 1683742660 in words is "one billion, six hundred eighty-three million, seven hundred forty-two thousand, six hundred sixty".