1602644381910 has 640 divisors, whose sum is σ = 5144703911424. Its totient is φ = 354331791360.

The previous prime is 1602644381869. The next prime is 1602644381957. The reversal of 1602644381910 is 191834462061.

1602644381910 is a `hidden beast` number, since 1 + 6 + 0 + 26 + 4 + 438 + 191 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 319 ways as a sum of consecutive naturals, for example, 2730228637 + ... + 2730229223.

Almost surely, 2^{1602644381910} is an apocalyptic number.

1602644381910 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1602644381910, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2572351955712).

1602644381910 is an abundant number, since it is smaller than the sum of its proper divisors (3542059529514).

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

1602644381910 is an equidigital number, since it uses as much as digits as its factorization.

1602644381910 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 742 (or 718 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The spelling of 1602644381910 in words is "one trillion, six hundred two billion, six hundred forty-four million, three hundred eighty-one thousand, nine hundred ten".