191478916 has 12 divisors (see below), whose sum is σ = 337727488. Its totient is φ = 94985352.

The previous prime is 191478907. The next prime is 191478923. The reversal of 191478916 is 619874191.

191478916 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

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, 187956 + ... + 188971.

Almost surely, 2^191478916 is an apocalyptic number.

It is an amenable number.

191478916 is a deficient number, since it is larger than the sum of its proper divisors (146248572).

191478916 is a wasteful number, since it uses less digits than its factorization.

191478916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377058 (or 377056 counting only the distinct ones).

The product of its digits is 108864, while the sum is 46.

The square root of 191478916 is about 13837.5906862430. The cubic root of 191478916 is about 576.3774572314.

The spelling of 191478916 in words is "one hundred ninety-one million, four hundred seventy-eight thousand, nine hundred sixteen".