191853041 has 4 divisors (see below), whose sum is σ = 203138532. Its totient is φ = 180567552.

The previous prime is 191852989. The next prime is 191853061. The reversal of 191853041 is 140358191.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 90649441 + 101203600 = 9521^2 + 10060^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-191853041 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 191852989 and 191853007.

It is not an unprimeable number, because it can be changed into a prime (191853061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5642720 + ... + 5642753.

It is an arithmetic number, because the mean of its divisors is an integer number (50784633).

Almost surely, 2^191853041 is an apocalyptic number.

It is an amenable number.

191853041 is a deficient number, since it is larger than the sum of its proper divisors (11285491).

191853041 is a wasteful number, since it uses less digits than its factorization.

191853041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11285490.

The product of its (nonzero) digits is 4320, while the sum is 32.

The square root of 191853041 is about 13851.1025192943. The cubic root of 191853041 is about 576.7526019741.

The spelling of 191853041 in words is "one hundred ninety-one million, eight hundred fifty-three thousand, forty-one".