1644016130 has 8 divisors (see below), whose sum is σ = 2959229052. Its totient is φ = 657606448.

The previous prime is 1644016117. The next prime is 1644016133. The reversal of 1644016130 is 316104461.

It can be written as a sum of positive squares in 2 ways, for example, as 1503190441 + 140825689 = 38771^2 + 11867^2 .

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

It is a super-3 number, since 3×1644016130³ (a number of 29 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1644016130.

It is not an unprimeable number, because it can be changed into a prime (1644016133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82200797 + ... + 82200816.

Almost surely, 2^1644016130 is an apocalyptic number.

1644016130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1644016130 is a deficient number, since it is larger than the sum of its proper divisors (1315212922).

1644016130 is a wasteful number, since it uses less digits than its factorization.

1644016130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164401620.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 1644016130 is about 40546.4687734949. The cubic root of 1644016130 is about 1180.2355485915.

The spelling of 1644016130 in words is "one billion, six hundred forty-four million, sixteen thousand, one hundred thirty".