192148991999 has 4 divisors (see below), whose sum is σ = 192684226320. Its totient is φ = 191613757680.

The previous prime is 192148991989. The next prime is 192148992047. The reversal of 192148991999 is 999199841291.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 999199841291 = 3307 ⋅302146913.

It is a cyclic number.

It is not a de Polignac number, because 192148991999 - 2¹² = 192148987903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (192148991929) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 267616622 + ... + 267617339.

It is an arithmetic number, because the mean of its divisors is an integer number (48171056580).

Almost surely, 2^192148991999 is an apocalyptic number.

192148991999 is a deficient number, since it is larger than the sum of its proper divisors (535234321).

192148991999 is an equidigital number, since it uses as much as digits as its factorization.

192148991999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 535234320.

The product of its digits is 34012224, while the sum is 71.

The spelling of 192148991999 in words is "one hundred ninety-two billion, one hundred forty-eight million, nine hundred ninety-one thousand, nine hundred ninety-nine".