165426049 has 2 divisors, whose sum is σ = 165426050. Its totient is φ = 165426048.

The previous prime is 165426043. The next prime is 165426067. The reversal of 165426049 is 940624561.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 144769024 + 20657025 = 12032^2 + 4545^2 .

It is a cyclic number.

It is not a de Polignac number, because 165426049 - 2¹¹ = 165424001 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 165425999 and 165426017.

It is not a weakly prime, because it can be changed into another prime (165426043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82713024 + 82713025.

It is an arithmetic number, because the mean of its divisors is an integer number (82713025).

Almost surely, 2^165426049 is an apocalyptic number.

It is an amenable number.

165426049 is a deficient number, since it is larger than the sum of its proper divisors (1).

165426049 is an equidigital number, since it uses as much as digits as its factorization.

165426049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 165426049 is about 12861.8058218899. The cubic root of 165426049 is about 548.9523295735.

The spelling of 165426049 in words is "one hundred sixty-five million, four hundred twenty-six thousand, forty-nine".