191493904032 has 480 divisors, whose sum is σ = 632984647680. Its totient is φ = 56435097600.

The previous prime is 191493904031. The next prime is 191493904039. The reversal of 191493904032 is 230409394191.

191493904032 is a `hidden beast` number, since 1 + 9 + 1 + 493 + 90 + 40 + 32 = 666.

It is not an unprimeable number, because it can be changed into a prime (191493904031) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 106325532 + ... + 106327332.

It is an arithmetic number, because the mean of its divisors is an integer number (1318718016).

Almost surely, 2^191493904032 is an apocalyptic number.

191493904032 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 191493904032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (316492323840).

191493904032 is an abundant number, since it is smaller than the sum of its proper divisors (441490743648).

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

191493904032 is a wasteful number, since it uses less digits than its factorization.

191493904032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1986 (or 1969 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 45.

The spelling of 191493904032 in words is "one hundred ninety-one billion, four hundred ninety-three million, nine hundred four thousand, thirty-two".