1849721773536 has 576 divisors, whose sum is σ = 6582606750720. Its totient is φ = 479698329600.

The previous prime is 1849721773429. The next prime is 1849721773573. The reversal of 1849721773536 is 6353771279481.

1849721773536 is a `hidden beast` number, since 1 + 8 + 4 + 9 + 7 + 21 + 7 + 73 + 536 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

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 95 ways as a sum of consecutive naturals, for example, 725095461 + ... + 725098011.

It is an arithmetic number, because the mean of its divisors is an integer number (11428136720).

Almost surely, 2^{1849721773536} is an apocalyptic number.

1849721773536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1849721773536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3291303375360).

1849721773536 is an abundant number, since it is smaller than the sum of its proper divisors (4732884977184).

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

1849721773536 is a wasteful number, since it uses less digits than its factorization.

1849721773536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3039 (or 3028 counting only the distinct ones).

The product of its digits is 53343360, while the sum is 63.

The spelling of 1849721773536 in words is "one trillion, eight hundred forty-nine billion, seven hundred twenty-one million, seven hundred seventy-three thousand, five hundred thirty-six".