191541056 has 112 divisors (see below), whose sum is σ = 469635840. Its totient is φ = 75694080.

The previous prime is 191541047. The next prime is 191541067. The reversal of 191541056 is 650145191.

191541056 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (112).

It is a super-2 number, since 2×191541056² = 73375952267190272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 298496 + ... + 299136.

Almost surely, 2^191541056 is an apocalyptic number.

191541056 is a gapful number since it is divisible by the number (16) 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 191541056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (234817920).

191541056 is an abundant number, since it is smaller than the sum of its proper divisors (278094784).

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

191541056 is a wasteful number, since it uses less digits than its factorization.

191541056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 712 (or 702 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 32.

The square root of 191541056 is about 13839.8358371767. The cubic root of 191541056 is about 576.4398004251.

The spelling of 191541056 in words is "one hundred ninety-one million, five hundred forty-one thousand, fifty-six".