1644414102 has 64 divisors (see below), whose sum is σ = 3717964800. Its totient is φ = 538634880.

The previous prime is 1644414089. The next prime is 1644414103. The reversal of 1644414102 is 2014144461.

1644414102 is a `hidden beast` number, since 1 + 644 + 4 + 1 + 4 + 10 + 2 = 666.

It is a super-3 number, since 3×1644414102³ (a number of 29 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1644414103) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1682638 + ... + 1683614.

It is an arithmetic number, because the mean of its divisors is an integer number (58093200).

Almost surely, 2^1644414102 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1644414102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1858982400).

1644414102 is an abundant number, since it is smaller than the sum of its proper divisors (2073550698).

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

1644414102 is a wasteful number, since it uses less digits than its factorization.

1644414102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1498 (or 1492 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 1644414102 is about 40551.3760802269. The cubic root of 1644414102 is about 1180.3307753146.

Adding to 1644414102 its reverse (2014144461), we get a palindrome (3658558563).

The spelling of 1644414102 in words is "one billion, six hundred forty-four million, four hundred fourteen thousand, one hundred two".