192693881 has 2 divisors, whose sum is σ = 192693882. Its totient is φ = 192693880.

The previous prime is 192693869. The next prime is 192693883. The reversal of 192693881 is 188396291.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 123654400 + 69039481 = 11120^2 + 8309^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-192693881 is a prime.

It is a super-2 number, since 2×192693881² = 74261863549684322, which contains 22 as substring.

Together with 192693883, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (192693883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 96346940 + 96346941.

It is an arithmetic number, because the mean of its divisors is an integer number (96346941).

Almost surely, 2^192693881 is an apocalyptic number.

It is an amenable number.

192693881 is a deficient number, since it is larger than the sum of its proper divisors (1).

192693881 is an equidigital number, since it uses as much as digits as its factorization.

192693881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 186624, while the sum is 47.

The square root of 192693881 is about 13881.4221533674. The cubic root of 192693881 is about 577.5939575891.

The spelling of 192693881 in words is "one hundred ninety-two million, six hundred ninety-three thousand, eight hundred eighty-one".