191389956483 has 32 divisors (see below), whose sum is σ = 283089715200. Its totient is φ = 114046077600.

The previous prime is 191389956469. The next prime is 191389956521. The reversal of 191389956483 is 384659983191.

It is not a de Polignac number, because 191389956483 - 2⁹ = 191389955971 is a prime.

It is not an unprimeable number, because it can be changed into a prime (191389956083) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 469488 + ... + 776658.

It is an arithmetic number, because the mean of its divisors is an integer number (8846553600).

Almost surely, 2^191389956483 is an apocalyptic number.

191389956483 is a deficient number, since it is larger than the sum of its proper divisors (91699758717).

191389956483 is a wasteful number, since it uses less digits than its factorization.

191389956483 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307503.

The product of its digits is 50388480, while the sum is 66.

The spelling of 191389956483 in words is "one hundred ninety-one billion, three hundred eighty-nine million, nine hundred fifty-six thousand, four hundred eighty-three".