191651083 has 16 divisors (see below), whose sum is σ = 218826496. Its totient is φ = 166561920.

The previous prime is 191651059. The next prime is 191651093. The reversal of 191651083 is 380156191.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-191651083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (191651023) 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, 8485 + ... + 21337.

It is an arithmetic number, because the mean of its divisors is an integer number (13676656).

Almost surely, 2^191651083 is an apocalyptic number.

191651083 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

191651083 is a deficient number, since it is larger than the sum of its proper divisors (27175413).

191651083 is a wasteful number, since it uses less digits than its factorization.

191651083 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12934.

The product of its (nonzero) digits is 6480, while the sum is 34.

The square root of 191651083 is about 13843.8102775211. The cubic root of 191651083 is about 576.5501541406.

The spelling of 191651083 in words is "one hundred ninety-one million, six hundred fifty-one thousand, eighty-three".