191444954964 has 24 divisors (see below), whose sum is σ = 458778001248. Its totient is φ = 62090255520.

The previous prime is 191444954951. The next prime is 191444954989. The reversal of 191444954964 is 469459444191.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 191444954898 and 191444954907.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 215590722 + ... + 215591609.

It is an arithmetic number, because the mean of its divisors is an integer number (19115750052).

Almost surely, 2^191444954964 is an apocalyptic number.

It is an amenable number.

191444954964 is an abundant number, since it is smaller than the sum of its proper divisors (267333046284).

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

191444954964 is a wasteful number, since it uses less digits than its factorization.

191444954964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431182375 (or 431182373 counting only the distinct ones).

The product of its digits is 22394880, while the sum is 60.

The spelling of 191444954964 in words is "one hundred ninety-one billion, four hundred forty-four million, nine hundred fifty-four thousand, nine hundred sixty-four".