191747038481 has 16 divisors (see below), whose sum is σ = 197429557248. Its totient is φ = 186132882000.

The previous prime is 191747038477. The next prime is 191747038501. The reversal of 191747038481 is 184830747191.

It is a cyclic number.

It is not a de Polignac number, because 191747038481 - 2² = 191747038477 is a prime.

It is a super-2 number, since 2×191747038481² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (191747038381) 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, 12817556 + ... + 12832506.

It is an arithmetic number, because the mean of its divisors is an integer number (12339347328).

Almost surely, 2^191747038481 is an apocalyptic number.

It is an amenable number.

191747038481 is a deficient number, since it is larger than the sum of its proper divisors (5682518767).

191747038481 is a wasteful number, since it uses less digits than its factorization.

191747038481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17212.

The product of its (nonzero) digits is 1354752, while the sum is 53.

The spelling of 191747038481 in words is "one hundred ninety-one billion, seven hundred forty-seven million, thirty-eight thousand, four hundred eighty-one".