192855881 has 2 divisors, whose sum is σ = 192855882. Its totient is φ = 192855880.

The previous prime is 192855869. The next prime is 192855907. The reversal of 192855881 is 188558291.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 190881856 + 1974025 = 13816^2 + 1405^2 .

It is an emirp because it is prime and its reverse (188558291) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-192855881 is a prime.

It is a super-2 number, since 2×192855881² = 74386781672572322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (192855811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 96427940 + 96427941.

It is an arithmetic number, because the mean of its divisors is an integer number (96427941).

Almost surely, 2^192855881 is an apocalyptic number.

It is an amenable number.

192855881 is a deficient number, since it is larger than the sum of its proper divisors (1).

192855881 is an equidigital number, since it uses as much as digits as its factorization.

192855881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 230400, while the sum is 47.

The square root of 192855881 is about 13887.2560644643. The cubic root of 192855881 is about 577.7557755825.

The spelling of 192855881 in words is "one hundred ninety-two million, eight hundred fifty-five thousand, eight hundred eighty-one".