192148991990 has 16 divisors (see below), whose sum is σ = 357794675280. Its totient is φ = 74209265760.

The previous prime is 192148991989. The next prime is 192148992047. The reversal of 192148991990 is 99199841291.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 331291076 + ... + 331291655.

It is an arithmetic number, because the mean of its divisors is an integer number (22362167205).

Almost surely, 2^192148991990 is an apocalyptic number.

192148991990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

192148991990 is a deficient number, since it is larger than the sum of its proper divisors (165645683290).

192148991990 is a wasteful number, since it uses less digits than its factorization.

192148991990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 662582767.

The product of its (nonzero) digits is 3779136, while the sum is 62.

The spelling of 192148991990 in words is "one hundred ninety-two billion, one hundred forty-eight million, nine hundred ninety-one thousand, nine hundred ninety".