191010092 has 48 divisors (see below), whose sum is σ = 419211072. Its totient is φ = 74131200.

The previous prime is 191010073. The next prime is 191010107. The reversal of 191010092 is 290010191.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14342 + ... + 24242.

It is an arithmetic number, because the mean of its divisors is an integer number (8733564).

Almost surely, 2^191010092 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 191010092, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (209605536).

191010092 is an abundant number, since it is smaller than the sum of its proper divisors (228200980).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

191010092 is a wasteful number, since it uses less digits than its factorization.

191010092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9978 (or 9976 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 23.

The square root of 191010092 is about 13820.6400720082. The cubic root of 191010092 is about 575.9066648858.

Subtracting 191010092 from its reverse (290010191), we obtain a palindrome (99000099).

The spelling of 191010092 in words is "one hundred ninety-one million, ten thousand, ninety-two".