191078196 has 24 divisors (see below), whose sum is σ = 448845600. Its totient is φ = 63264672.

The previous prime is 191078191. The next prime is 191078207. The reversal of 191078196 is 691870191.

It is a super-2 number, since 2×191078196² = 73021753973228832, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (191078191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51646 + ... + 55221.

It is an arithmetic number, because the mean of its divisors is an integer number (18701900).

Almost surely, 2^191078196 is an apocalyptic number.

It is an amenable number.

191078196 is an abundant number, since it is smaller than the sum of its proper divisors (257767404).

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

191078196 is a wasteful number, since it uses less digits than its factorization.

191078196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107023 (or 107021 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 42.

The square root of 191078196 is about 13823.1037035826. The cubic root of 191078196 is about 575.9751026082.

The spelling of 191078196 in words is "one hundred ninety-one million, seventy-eight thousand, one hundred ninety-six".