1644676014 has 16 divisors (see below), whose sum is σ = 3402778320. Its totient is φ = 529320960.

The previous prime is 1644676013. The next prime is 1644676027. The reversal of 1644676014 is 4106764461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1644676013) 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, 4725907 + ... + 4726254.

It is an arithmetic number, because the mean of its divisors is an integer number (212673645).

Almost surely, 2^1644676014 is an apocalyptic number.

1644676014 is an abundant number, since it is smaller than the sum of its proper divisors (1758102306).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1644676014 is a wasteful number, since it uses less digits than its factorization.

1644676014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9452195.

The product of its (nonzero) digits is 96768, while the sum is 39.

The square root of 1644676014 is about 40554.6053365089. The cubic root of 1644676014 is about 1180.3934372241.

The spelling of 1644676014 in words is "one billion, six hundred forty-four million, six hundred seventy-six thousand, fourteen".