8162491 has 2 divisors, whose sum is σ = 8162492. Its totient is φ = 8162490.

The previous prime is 8162489. The next prime is 8162501. The reversal of 8162491 is 1942618.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8162491 - 2¹ = 8162489 is a prime.

Together with 8162489, it forms a pair of twin primes.

8162491 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (8162411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4081245 + 4081246.

It is an arithmetic number, because the mean of its divisors is an integer number (4081246).

Almost surely, 2^8162491 is an apocalyptic number.

8162491 is a deficient number, since it is larger than the sum of its proper divisors (1).

8162491 is an equidigital number, since it uses as much as digits as its factorization.

8162491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3456, while the sum is 31.

The square root of 8162491 is about 2857.0073503581. The cubic root of 8162491 is about 201.3450259158.

The spelling of 8162491 in words is "eight million, one hundred sixty-two thousand, four hundred ninety-one".