191950464 has 64 divisors (see below), whose sum is σ = 536724000. Its totient is φ = 60613632.

The previous prime is 191950463. The next prime is 191950513. The reversal of 191950464 is 464059191.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-3 number, since 3×191950464³ (a number of 26 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (191950463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5859 + ... + 20450.

Almost surely, 2^191950464 is an apocalyptic number.

It is an amenable number.

191950464 is an abundant number, since it is smaller than the sum of its proper divisors (344773536).

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

191950464 is a wasteful number, since it uses less digits than its factorization.

191950464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26345 (or 26333 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 191950464 is about 13854.6188688105. The cubic root of 191950464 is about 576.8502104704.

The spelling of 191950464 in words is "one hundred ninety-one million, nine hundred fifty thousand, four hundred sixty-four".