1685176013 has 2 divisors, whose sum is σ = 1685176014. Its totient is φ = 1685176012.

The previous prime is 1685175997. The next prime is 1685176039. The reversal of 1685176013 is 3106715861.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1681164004 + 4012009 = 41002^2 + 2003^2 .

It is a cyclic number.

It is not a de Polignac number, because 1685176013 - 2⁴ = 1685175997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1685176043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 842588006 + 842588007.

It is an arithmetic number, because the mean of its divisors is an integer number (842588007).

Almost surely, 2^1685176013 is an apocalyptic number.

It is an amenable number.

1685176013 is a deficient number, since it is larger than the sum of its proper divisors (1).

1685176013 is an equidigital number, since it uses as much as digits as its factorization.

1685176013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 38.

The square root of 1685176013 is about 41050.8953982736. The cubic root of 1685176013 is about 1190.0040046472.

The spelling of 1685176013 in words is "one billion, six hundred eighty-five million, one hundred seventy-six thousand, thirteen".