1683355505 has 16 divisors (see below), whose sum is σ = 2176268304. Its totient is φ = 1242604800.

The previous prime is 1683355423. The next prime is 1683355507. The reversal of 1683355505 is 5055533861.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 187909264 + 1495446241 = 13708^2 + 38671^2 .

It is not a de Polignac number, because 1683355505 - 2¹⁴ = 1683339121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1683355507) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 327455 + ... + 332555.

It is an arithmetic number, because the mean of its divisors is an integer number (136016769).

Almost surely, 2^1683355505 is an apocalyptic number.

It is an amenable number.

1683355505 is a deficient number, since it is larger than the sum of its proper divisors (492912799).

1683355505 is a wasteful number, since it uses less digits than its factorization.

1683355505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10196.

The product of its (nonzero) digits is 270000, while the sum is 41.

The square root of 1683355505 is about 41028.7156147984. The cubic root of 1683355505 is about 1189.5753268924.

The spelling of 1683355505 in words is "one billion, six hundred eighty-three million, three hundred fifty-five thousand, five hundred five".