1849421726400 has 672 divisors, whose sum is σ = 6531010560000. Its totient is φ = 456806338560.

The previous prime is 1849421726393. The next prime is 1849421726429. The reversal of 1849421726400 is 46271249481.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 1849421726400.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 770912401 + ... + 770914799.

Almost surely, 2^{1849421726400} is an apocalyptic number.

1849421726400 is a gapful number since it is divisible by the number (10) 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 1849421726400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3265505280000).

1849421726400 is an abundant number, since it is smaller than the sum of its proper divisors (4681588833600).

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

1849421726400 is a wasteful number, since it uses less digits than its factorization.

1849421726400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2629 (or 2614 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 48.

The spelling of 1849421726400 in words is "one trillion, eight hundred forty-nine billion, four hundred twenty-one million, seven hundred twenty-six thousand, four hundred".