1645112323 has 2 divisors, whose sum is σ = 1645112324. Its totient is φ = 1645112322.

The previous prime is 1645112291. The next prime is 1645112327. The reversal of 1645112323 is 3232115461.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1645112323 - 2⁵ = 1645112291 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1645112291 and 1645112300.

It is not a weakly prime, because it can be changed into another prime (1645112327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 822556161 + 822556162.

It is an arithmetic number, because the mean of its divisors is an integer number (822556162).

Almost surely, 2^1645112323 is an apocalyptic number.

1645112323 is a deficient number, since it is larger than the sum of its proper divisors (1).

1645112323 is an equidigital number, since it uses as much as digits as its factorization.

1645112323 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4320, while the sum is 28.

The square root of 1645112323 is about 40559.9842578865. The cubic root of 1645112323 is about 1180.4978084884.

Adding to 1645112323 its reverse (3232115461), we get a palindrome (4877227784).

The spelling of 1645112323 in words is "one billion, six hundred forty-five million, one hundred twelve thousand, three hundred twenty-three".