191370648 has 64 divisors (see below), whose sum is σ = 552960000. Its totient is φ = 54058752.

The previous prime is 191370643. The next prime is 191370661. The reversal of 191370648 is 846073191.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (191370643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8553 + ... + 21351.

It is an arithmetic number, because the mean of its divisors is an integer number (8640000).

Almost surely, 2^191370648 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 191370648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (276480000).

191370648 is an abundant number, since it is smaller than the sum of its proper divisors (361589352).

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

191370648 is a wasteful number, since it uses less digits than its factorization.

191370648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12904 (or 12900 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 191370648 is about 13833.6780358659. The cubic root of 191370648 is about 576.2688029714.

The spelling of 191370648 in words is "one hundred ninety-one million, three hundred seventy thousand, six hundred forty-eight".