1827705697 has 2 divisors, whose sum is σ = 1827705698. Its totient is φ = 1827705696.

The previous prime is 1827705673. The next prime is 1827705713. The reversal of 1827705697 is 7965077281.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1696121856 + 131583841 = 41184^2 + 11471^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1827705697 is a prime.

It is a super-2 number, since 2×1827705697² = 6681016229692511618, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1827705617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 913852848 + 913852849.

It is an arithmetic number, because the mean of its divisors is an integer number (913852849).

Almost surely, 2^1827705697 is an apocalyptic number.

It is an amenable number.

1827705697 is a deficient number, since it is larger than the sum of its proper divisors (1).

1827705697 is an equidigital number, since it uses as much as digits as its factorization.

1827705697 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1481760, while the sum is 52.

The square root of 1827705697 is about 42751.6747859075. The cubic root of 1827705697 is about 1222.6498207295.

The spelling of 1827705697 in words is "one billion, eight hundred twenty-seven million, seven hundred five thousand, six hundred ninety-seven".