1645132334 has 8 divisors (see below), whose sum is σ = 2468003520. Its totient is φ = 822464496.

The previous prime is 1645132297. The next prime is 1645132351. The reversal of 1645132334 is 4332315461.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1645132334.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28679 + ... + 64130.

It is an arithmetic number, because the mean of its divisors is an integer number (308500440).

Almost surely, 2^1645132334 is an apocalyptic number.

1645132334 is a deficient number, since it is larger than the sum of its proper divisors (822871186).

1645132334 is an equidigital number, since it uses as much as digits as its factorization.

1645132334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101674.

The product of its digits is 25920, while the sum is 32.

The square root of 1645132334 is about 40560.2309411571. The cubic root of 1645132334 is about 1180.5025949591.

Adding to 1645132334 its reverse (4332315461), we get a palindrome (5977447795).

The spelling of 1645132334 in words is "one billion, six hundred forty-five million, one hundred thirty-two thousand, three hundred thirty-four".