191002012 has 12 divisors (see below), whose sum is σ = 335396376. Its totient is φ = 95174480.

The previous prime is 191001989. The next prime is 191002027. The reversal of 191002012 is 210200191.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80314 + ... + 82657.

It is an arithmetic number, because the mean of its divisors is an integer number (27949698).

Almost surely, 2^191002012 is an apocalyptic number.

It is an amenable number.

191002012 is a deficient number, since it is larger than the sum of its proper divisors (144394364).

191002012 is a wasteful number, since it uses less digits than its factorization.

191002012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163268 (or 163266 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 16.

The square root of 191002012 is about 13820.3477524988. The cubic root of 191002012 is about 575.8985442128.

It can be divided in two parts, 19100 and 2012, that added together give a palindrome (21112).

The spelling of 191002012 in words is "one hundred ninety-one million, two thousand, twelve".