1785199601 has 2 divisors, whose sum is σ = 1785199602. Its totient is φ = 1785199600.

The previous prime is 1785199589. The next prime is 1785199613. The reversal of 1785199601 is 1069915871.

It is a balanced prime because it is at equal distance from previous prime (1785199589) and next prime (1785199613).

It can be written as a sum of positive squares in only one way, i.e., 1500400225 + 284799376 = 38735^2 + 16876^2 .

It is a cyclic number.

It is not a de Polignac number, because 1785199601 - 2¹⁴ = 1785183217 is a prime.

It is not a weakly prime, because it can be changed into another prime (1785199621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 892599800 + 892599801.

It is an arithmetic number, because the mean of its divisors is an integer number (892599801).

Almost surely, 2^1785199601 is an apocalyptic number.

1785199601 is the 18896-th centered decagonal number.

It is an amenable number.

1785199601 is a deficient number, since it is larger than the sum of its proper divisors (1).

1785199601 is an equidigital number, since it uses as much as digits as its factorization.

1785199601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 136080, while the sum is 47.

The square root of 1785199601 is about 42251.6224658888. The cubic root of 1785199601 is about 1213.0971815209.

The spelling of 1785199601 in words is "one billion, seven hundred eighty-five million, one hundred ninety-nine thousand, six hundred one".