1853668697 has 2 divisors, whose sum is σ = 1853668698. Its totient is φ = 1853668696.

The previous prime is 1853668681. The next prime is 1853668717. The reversal of 1853668697 is 7968663581.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1451305216 + 402363481 = 38096^2 + 20059^2 .

It is an emirp because it is prime and its reverse (7968663581) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1853668697 - 2⁴ = 1853668681 is a prime.

It is not a weakly prime, because it can be changed into another prime (1853668637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 926834348 + 926834349.

It is an arithmetic number, because the mean of its divisors is an integer number (926834349).

Almost surely, 2^1853668697 is an apocalyptic number.

It is an amenable number.

1853668697 is a deficient number, since it is larger than the sum of its proper divisors (1).

1853668697 is an equidigital number, since it uses as much as digits as its factorization.

1853668697 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13063680, while the sum is 59.

The square root of 1853668697 is about 43054.2529490409. The cubic root of 1853668697 is about 1228.4119671678.

The spelling of 1853668697 in words is "one billion, eight hundred fifty-three million, six hundred sixty-eight thousand, six hundred ninety-seven".