191349654950 has 24 divisors (see below), whose sum is σ = 360785849448. Its totient is φ = 75491369280.

The previous prime is 191349654943. The next prime is 191349654953. The reversal of 191349654950 is 59456943191.

191349654950 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×191349654950² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (191349654953) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26208632 + ... + 26215931.

It is an arithmetic number, because the mean of its divisors is an integer number (15032743727).

Almost surely, 2^191349654950 is an apocalyptic number.

191349654950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

191349654950 is a deficient number, since it is larger than the sum of its proper divisors (169436194498).

191349654950 is a wasteful number, since it uses less digits than its factorization.

191349654950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52424648 (or 52424643 counting only the distinct ones).

The product of its (nonzero) digits is 5248800, while the sum is 56.

The spelling of 191349654950 in words is "one hundred ninety-one billion, three hundred forty-nine million, six hundred fifty-four thousand, nine hundred fifty".