191472964681 has 8 divisors (see below), whose sum is σ = 194464613504. Its totient is φ = 188485252560.

The previous prime is 191472964663. The next prime is 191472964717. The reversal of 191472964681 is 186469274191.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 191472964681 - 2¹⁵ = 191472931913 is a prime.

It is a super-2 number, since 2×191472964681² (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 (191172964681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 886065 + ... + 1080766.

It is an arithmetic number, because the mean of its divisors is an integer number (24308076688).

Almost surely, 2^191472964681 is an apocalyptic number.

It is an amenable number.

191472964681 is a deficient number, since it is larger than the sum of its proper divisors (2991648823).

191472964681 is a wasteful number, since it uses less digits than its factorization.

191472964681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1968351.

The product of its digits is 5225472, while the sum is 58.

The spelling of 191472964681 in words is "one hundred ninety-one billion, four hundred seventy-two million, nine hundred sixty-four thousand, six hundred eighty-one".