191012068 has 48 divisors (see below), whose sum is σ = 383670000. Its totient is φ = 82427904.

The previous prime is 191012057. The next prime is 191012077. The reversal of 191012068 is 860210191.

It is a happy number.

191012068 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 4088484 + 186923584 = 2022^2 + 13672^2 .

It is a super-2 number, since 2×191012068² = 72971220243273248, which contains 22 as substring.

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, 152308 + ... + 153556.

It is an arithmetic number, because the mean of its divisors is an integer number (7993125).

Almost surely, 2^191012068 is an apocalyptic number.

It is an amenable number.

191012068 is an abundant number, since it is smaller than the sum of its proper divisors (192657932).

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

191012068 is a wasteful number, since it uses less digits than its factorization.

191012068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1456 (or 1454 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 28.

The square root of 191012068 is about 13820.7115591058. The cubic root of 191012068 is about 575.9086507977.

The spelling of 191012068 in words is "one hundred ninety-one million, twelve thousand, sixty-eight".