165482491 has 2 divisors, whose sum is σ = 165482492. Its totient is φ = 165482490.

The previous prime is 165482479. The next prime is 165482503. The reversal of 165482491 is 194284561.

It is a balanced prime because it is at equal distance from previous prime (165482479) and next prime (165482503).

It is a cyclic number.

It is not a de Polignac number, because 165482491 - 2⁷ = 165482363 is a prime.

It is not a weakly prime, because it can be changed into another prime (165482461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82741245 + 82741246.

It is an arithmetic number, because the mean of its divisors is an integer number (82741246).

Almost surely, 2^165482491 is an apocalyptic number.

165482491 is a deficient number, since it is larger than the sum of its proper divisors (1).

165482491 is an equidigital number, since it uses as much as digits as its factorization.

165482491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69120, while the sum is 40.

The square root of 165482491 is about 12863.9998056592. Note that the first 3 decimals coincide. The cubic root of 165482491 is about 549.0147551395.

The spelling of 165482491 in words is "one hundred sixty-five million, four hundred eighty-two thousand, four hundred ninety-one".