193985672863 has 2 divisors, whose sum is σ = 193985672864. Its totient is φ = 193985672862.

The previous prime is 193985672849. The next prime is 193985672879. The reversal of 193985672863 is 368276589391.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 193985672863 - 2¹³ = 193985664671 is a prime.

It is a super-2 number, since 2×193985672863² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (193985672833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 96992836431 + 96992836432.

It is an arithmetic number, because the mean of its divisors is an integer number (96992836432).

Almost surely, 2^193985672863 is an apocalyptic number.

193985672863 is a deficient number, since it is larger than the sum of its proper divisors (1).

193985672863 is an equidigital number, since it uses as much as digits as its factorization.

193985672863 is an evil number, because the sum of its binary digits is even.

The product of its digits is 117573120, while the sum is 67.

The spelling of 193985672863 in words is "one hundred ninety-three billion, nine hundred eighty-five million, six hundred seventy-two thousand, eight hundred sixty-three".