191852461 has 2 divisors, whose sum is σ = 191852462. Its totient is φ = 191852460.

The previous prime is 191852413. The next prime is 191852477. The reversal of 191852461 is 164258191.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 168870025 + 22982436 = 12995^2 + 4794^2 .

It is an emirp because it is prime and its reverse (164258191) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 191852461 - 2²³ = 183463853 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 191852461.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (191852491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95926230 + 95926231.

It is an arithmetic number, because the mean of its divisors is an integer number (95926231).

Almost surely, 2^191852461 is an apocalyptic number.

It is an amenable number.

191852461 is a deficient number, since it is larger than the sum of its proper divisors (1).

191852461 is an equidigital number, since it uses as much as digits as its factorization.

191852461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 37.

The square root of 191852461 is about 13851.0815823170. The cubic root of 191852461 is about 576.7520207709.

The spelling of 191852461 in words is "one hundred ninety-one million, eight hundred fifty-two thousand, four hundred sixty-one".