191453332950 has 216 divisors, whose sum is σ = 568256598000. Its totient is φ = 46177084800.

The previous prime is 191453332927. The next prime is 191453332963. The reversal of 191453332950 is 59233354191.

191453332950 is a `hidden beast` number, since 1 + 91 + 4 + 533 + 3 + 29 + 5 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 191453332896 and 191453332905.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 10826716 + ... + 10844384.

Almost surely, 2^191453332950 is an apocalyptic number.

191453332950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 191453332950, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (284128299000).

191453332950 is an abundant number, since it is smaller than the sum of its proper divisors (376803265050).

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

191453332950 is a wasteful number, since it uses less digits than its factorization.

191453332950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17908 (or 17889 counting only the distinct ones).

The product of its (nonzero) digits is 437400, while the sum is 45.

The spelling of 191453332950 in words is "one hundred ninety-one billion, four hundred fifty-three million, three hundred thirty-two thousand, nine hundred fifty".