191010316830 has 64 divisors (see below), whose sum is σ = 510937839360. Its totient is φ = 45416692224.

The previous prime is 191010316801. The next prime is 191010316831. The reversal of 191010316830 is 38613010191.

It is a happy number.

It is a super-2 number, since 2×191010316830² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 191010316791 and 191010316800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (191010316831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9846364 + ... + 9865743.

It is an arithmetic number, because the mean of its divisors is an integer number (7983403740).

Almost surely, 2^191010316830 is an apocalyptic number.

191010316830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

191010316830 is an abundant number, since it is smaller than the sum of its proper divisors (319927522530).

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

191010316830 is a wasteful number, since it uses less digits than its factorization.

191010316830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19712153.

The product of its (nonzero) digits is 3888, while the sum is 33.

The spelling of 191010316830 in words is "one hundred ninety-one billion, ten million, three hundred sixteen thousand, eight hundred thirty".