191649848 has 32 divisors (see below), whose sum is σ = 389838960. Its totient is φ = 87801600.

The previous prime is 191649847. The next prime is 191649883. The reversal of 191649848 is 848946191.

It is a junction number, because it is equal to n+sod(n) for n = 191649796 and 191649805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (191649847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7523 + ... + 20973.

Almost surely, 2^191649848 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 191649848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (194919480).

191649848 is an abundant number, since it is smaller than the sum of its proper divisors (198189112).

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

191649848 is a wasteful number, since it uses less digits than its factorization.

191649848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13607 (or 13603 counting only the distinct ones).

The product of its digits is 497664, while the sum is 50.

The square root of 191649848 is about 13843.7656726774. The cubic root of 191649848 is about 576.5489157078.

The spelling of 191649848 in words is "one hundred ninety-one million, six hundred forty-nine thousand, eight hundred forty-eight".