2644485969 has 16 divisors (see below), whose sum is σ = 3699398144. Its totient is φ = 1678147200.

The previous prime is 2644485967. The next prime is 2644485971. The reversal of 2644485969 is 9695844462.

It is an interprime number because it is at equal distance from previous prime (2644485967) and next prime (2644485971).

It is not a de Polignac number, because 2644485969 - 2¹ = 2644485967 is a prime.

It is a super-2 number, since 2×2644485969² = 13986612080475737922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2644485967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 227404 + ... + 238749.

It is an arithmetic number, because the mean of its divisors is an integer number (231212384).

Almost surely, 2^2644485969 is an apocalyptic number.

It is an amenable number.

2644485969 is a deficient number, since it is larger than the sum of its proper divisors (1054912175).

2644485969 is a wasteful number, since it uses less digits than its factorization.

2644485969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 466248.

The product of its digits is 14929920, while the sum is 57.

The square root of 2644485969 is about 51424.5658124597. The cubic root of 2644485969 is about 1382.8670298976.

The spelling of 2644485969 in words is "two billion, six hundred forty-four million, four hundred eighty-five thousand, nine hundred sixty-nine".