1685141003437 has 2 divisors, whose sum is σ = 1685141003438. Its totient is φ = 1685141003436.

The previous prime is 1685141003431. The next prime is 1685141003453. The reversal of 1685141003437 is 7343001415861.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1671936925156 + 13204078281 = 1293034^2 + 114909^2 .

It is an emirp because it is prime and its reverse (7343001415861) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1685141003437 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1685141003393 and 1685141003402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1685141003431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 842570501718 + 842570501719.

It is an arithmetic number, because the mean of its divisors is an integer number (842570501719).

Almost surely, 2^{1685141003437} is an apocalyptic number.

It is an amenable number.

1685141003437 is a deficient number, since it is larger than the sum of its proper divisors (1).

1685141003437 is an equidigital number, since it uses as much as digits as its factorization.

1685141003437 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 241920, while the sum is 43.

The spelling of 1685141003437 in words is "one trillion, six hundred eighty-five billion, one hundred forty-one million, three thousand, four hundred thirty-seven".