191000010 has 32 divisors (see below), whose sum is σ = 468156672. Its totient is φ = 49849280.

The previous prime is 190999997. The next prime is 191000041. The reversal of 191000010 is 10000191.

It is a self number, because there is not a number n which added to its sum of digits gives 191000010.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66321 + ... + 69140.

It is an arithmetic number, because the mean of its divisors is an integer number (14629896).

Almost surely, 2^191000010 is an apocalyptic number.

191000010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

191000010 is an abundant number, since it is smaller than the sum of its proper divisors (277156662).

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

191000010 is a wasteful number, since it uses less digits than its factorization.

191000010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135518.

The product of its (nonzero) digits is 9, while the sum is 12.

The square root of 191000010 is about 13820.2753228726. The cubic root of 191000010 is about 575.8965320998.

The spelling of 191000010 in words is "one hundred ninety-one million, ten", and thus it is an aban number.