1645422333 has 8 divisors (see below), whose sum is σ = 2322949248. Its totient is φ = 1032421824.

The previous prime is 1645422319. The next prime is 1645422397. The reversal of 1645422333 is 3332245461.

It is a happy number.

1645422333 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1645422333 - 2¹⁷ = 1645291261 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1645422294 and 1645422303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1645422313) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16131541 + ... + 16131642.

It is an arithmetic number, because the mean of its divisors is an integer number (290368656).

Almost surely, 2^1645422333 is an apocalyptic number.

It is an amenable number.

1645422333 is a deficient number, since it is larger than the sum of its proper divisors (677526915).

1645422333 is a wasteful number, since it uses less digits than its factorization.

1645422333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32263203.

The product of its digits is 51840, while the sum is 33.

The square root of 1645422333 is about 40563.8057016350. The cubic root of 1645422333 is about 1180.5719560374.

Adding to 1645422333 its reverse (3332245461), we get a palindrome (4977667794).

The spelling of 1645422333 in words is "one billion, six hundred forty-five million, four hundred twenty-two thousand, three hundred thirty-three".