162405623 has 2 divisors, whose sum is σ = 162405624. Its totient is φ = 162405622.

The previous prime is 162405619. The next prime is 162405631. The reversal of 162405623 is 326504261.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 162405623 - 2² = 162405619 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (162405823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81202811 + 81202812.

It is an arithmetic number, because the mean of its divisors is an integer number (81202812).

Almost surely, 2^162405623 is an apocalyptic number.

162405623 is a deficient number, since it is larger than the sum of its proper divisors (1).

162405623 is an equidigital number, since it uses as much as digits as its factorization.

162405623 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 162405623 is about 12743.8464758486. The cubic root of 162405623 is about 545.5907775991.

Adding to 162405623 its reverse (326504261), we get a palindrome (488909884).

The spelling of 162405623 in words is "one hundred sixty-two million, four hundred five thousand, six hundred twenty-three".