1645012334 has 32 divisors (see below), whose sum is σ = 2922780672. Its totient is φ = 679500000.

The previous prime is 1645012333. The next prime is 1645012349. The reversal of 1645012334 is 4332105461.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 1645012297 and 1645012306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1645012333) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 101384 + ... + 116484.

It is an arithmetic number, because the mean of its divisors is an integer number (91336896).

Almost surely, 2^1645012334 is an apocalyptic number.

1645012334 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1645012334 is a deficient number, since it is larger than the sum of its proper divisors (1277768338).

1645012334 is a wasteful number, since it uses less digits than its factorization.

1645012334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15392.

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

The square root of 1645012334 is about 40558.7516326625. The cubic root of 1645012334 is about 1180.4738913399.

Adding to 1645012334 its reverse (4332105461), we get a palindrome (5977117795).

The spelling of 1645012334 in words is "one billion, six hundred forty-five million, twelve thousand, three hundred thirty-four".