192138214991 has 2 divisors, whose sum is σ = 192138214992. Its totient is φ = 192138214990.

The previous prime is 192138214943. The next prime is 192138215011. The reversal of 192138214991 is 199412831291.

It is a strong prime.

It is an emirp because it is prime and its reverse (199412831291) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-192138214991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (192138214091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 96069107495 + 96069107496.

It is an arithmetic number, because the mean of its divisors is an integer number (96069107496).

Almost surely, 2^192138214991 is an apocalyptic number.

192138214991 is a deficient number, since it is larger than the sum of its proper divisors (1).

192138214991 is an equidigital number, since it uses as much as digits as its factorization.

192138214991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 279936, while the sum is 50.

The spelling of 192138214991 in words is "one hundred ninety-two billion, one hundred thirty-eight million, two hundred fourteen thousand, nine hundred ninety-one".