192148991 has 2 divisors, whose sum is σ = 192148992. Its totient is φ = 192148990.

The previous prime is 192148987. The next prime is 192148997. The reversal of 192148991 is 199841291.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 192148991 - 2² = 192148987 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (192148997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 96074495 + 96074496.

It is an arithmetic number, because the mean of its divisors is an integer number (96074496).

Almost surely, 2^192148991 is an apocalyptic number.

192148991 is a deficient number, since it is larger than the sum of its proper divisors (1).

192148991 is an equidigital number, since it uses as much as digits as its factorization.

192148991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46656, while the sum is 44.

The square root of 192148991 is about 13861.7816675924. The cubic root of 192148991 is about 577.0490132946.

The spelling of 192148991 in words is "one hundred ninety-two million, one hundred forty-eight thousand, nine hundred ninety-one".