191074464 has 120 divisors (see below), whose sum is σ = 642283488. Its totient is φ = 54587520.

The previous prime is 191074463. The next prime is 191074489. The reversal of 191074464 is 464470191.

191074464 is a `hidden beast` number, since 191 + 0 + 7 + 4 + 464 = 666.

191074464 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (191074463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 12879 + ... + 23409.

Almost surely, 2^191074464 is an apocalyptic number.

191074464 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 191074464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (321141744).

191074464 is an abundant number, since it is smaller than the sum of its proper divisors (451209024).

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

191074464 is a wasteful number, since it uses less digits than its factorization.

191074464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10560 (or 10543 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 191074464 is about 13822.9687115323. The cubic root of 191074464 is about 575.9713527419.

The spelling of 191074464 in words is "one hundred ninety-one million, seventy-four thousand, four hundred sixty-four".