196857820853 has 2 divisors, whose sum is σ = 196857820854. Its totient is φ = 196857820852.

The previous prime is 196857820823. The next prime is 196857820883. The reversal of 196857820853 is 358028758691.

It is a balanced prime because it is at equal distance from previous prime (196857820823) and next prime (196857820883).

It can be written as a sum of positive squares in only one way, i.e., 163667175364 + 33190645489 = 404558^2 + 182183^2 .

It is an emirp because it is prime and its reverse (358028758691) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 196857820853 - 2⁸ = 196857820597 is a prime.

It is a super-3 number, since 3×196857820853³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (196857820813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98428910426 + 98428910427.

It is an arithmetic number, because the mean of its divisors is an integer number (98428910427).

Almost surely, 2^196857820853 is an apocalyptic number.

It is an amenable number.

196857820853 is a deficient number, since it is larger than the sum of its proper divisors (1).

196857820853 is an equidigital number, since it uses as much as digits as its factorization.

196857820853 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 29030400, while the sum is 62.

The spelling of 196857820853 in words is "one hundred ninety-six billion, eight hundred fifty-seven million, eight hundred twenty thousand, eight hundred fifty-three".