191053968 has 80 divisors (see below), whose sum is σ = 593771520. Its totient is φ = 51712128.

The previous prime is 191053963. The next prime is 191053969. The reversal of 191053968 is 869350191.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (191053963) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8580 + ... + 21347.

It is an arithmetic number, because the mean of its divisors is an integer number (7422144).

Almost surely, 2^191053968 is an apocalyptic number.

It is an amenable number.

191053968 is an abundant number, since it is smaller than the sum of its proper divisors (402717552).

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

191053968 is a wasteful number, since it uses less digits than its factorization.

191053968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29964 (or 29958 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 42.

The square root of 191053968 is about 13822.2273168980. The cubic root of 191053968 is about 575.9507577503.

The spelling of 191053968 in words is "one hundred ninety-one million, fifty-three thousand, nine hundred sixty-eight".