191993160 has 64 divisors (see below), whose sum is σ = 590042880. Its totient is φ = 49948160.

The previous prime is 191993129. The next prime is 191993173. The reversal of 191993160 is 61399191.

It is a happy number.

It is a super-2 number, since 2×191993160² = 73722746973571200, which contains 22 as substring.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 14592 + ... + 24431.

It is an arithmetic number, because the mean of its divisors is an integer number (9219420).

Almost surely, 2^191993160 is an apocalyptic number.

191993160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

191993160 is an abundant number, since it is smaller than the sum of its proper divisors (398049720).

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

191993160 is a wasteful number, since it uses less digits than its factorization.

191993160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39078 (or 39074 counting only the distinct ones).

The product of its (nonzero) digits is 13122, while the sum is 39.

The square root of 191993160 is about 13856.1596411127. The cubic root of 191993160 is about 576.8929773562.

The spelling of 191993160 in words is "one hundred ninety-one million, nine hundred ninety-three thousand, one hundred sixty".