2064631444 has 6 divisors (see below), whose sum is σ = 3613105034. Its totient is φ = 1032315720.

The previous prime is 2064631441. The next prime is 2064631469. The reversal of 2064631444 is 4441364602.

It can be written as a sum of positive squares in only one way, i.e., 2064611844 + 19600 = 45438^2 + 140^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2064631441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 258078927 + ... + 258078934.

Almost surely, 2^2064631444 is an apocalyptic number.

It is an amenable number.

2064631444 is a deficient number, since it is larger than the sum of its proper divisors (1548473590).

2064631444 is a wasteful number, since it uses less digits than its factorization.

2064631444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 516157865 (or 516157863 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 34.

The square root of 2064631444 is about 45438.2156779951. The cubic root of 2064631444 is about 1273.3491784316.

The spelling of 2064631444 in words is "two billion, sixty-four million, six hundred thirty-one thousand, four hundred forty-four".