1849878449280 has 512 divisors, whose sum is σ = 6691984992000. Its totient is φ = 482845556736.

The previous prime is 1849878449261. The next prime is 1849878449291. The reversal of 1849878449280 is 829448789481.

1849878449280 is a `hidden beast` number, since 1 + 8 + 4 + 98 + 78 + 449 + 28 + 0 = 666.

It is a super-2 number, since 2×1849878449280² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a junction number, because it is equal to n+sod(n) for n = 1849878449199 and 1849878449208.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 156326244 + ... + 156338076.

Almost surely, 2^{1849878449280} is an apocalyptic number.

1849878449280 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 1849878449280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3345992496000).

1849878449280 is an abundant number, since it is smaller than the sum of its proper divisors (4842106542720).

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

1849878449280 is a wasteful number, since it uses less digits than its factorization.

1849878449280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12053 (or 12035 counting only the distinct ones).

The product of its (nonzero) digits is 297271296, while the sum is 72.

The spelling of 1849878449280 in words is "one trillion, eight hundred forty-nine billion, eight hundred seventy-eight million, four hundred forty-nine thousand, two hundred eighty".