1827340681 has 2 divisors, whose sum is σ = 1827340682. Its totient is φ = 1827340680.

The previous prime is 1827340673. The next prime is 1827340687. The reversal of 1827340681 is 1860437281.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1826793081 + 547600 = 42741^2 + 740^2 .

It is a cyclic number.

It is not a de Polignac number, because 1827340681 - 2³ = 1827340673 is a prime.

It is a super-2 number, since 2×1827340681² = 6678347928875087522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1827340687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 913670340 + 913670341.

It is an arithmetic number, because the mean of its divisors is an integer number (913670341).

Almost surely, 2^1827340681 is an apocalyptic number.

It is an amenable number.

1827340681 is a deficient number, since it is larger than the sum of its proper divisors (1).

1827340681 is an equidigital number, since it uses as much as digits as its factorization.

1827340681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 1827340681 is about 42747.4055470037. The cubic root of 1827340681 is about 1222.5684224204.

The spelling of 1827340681 in words is "one billion, eight hundred twenty-seven million, three hundred forty thousand, six hundred eighty-one".