1873398904440 has 256 divisors, whose sum is σ = 6750574387200. Its totient is φ = 406640577024.

The previous prime is 1873398904427. The next prime is 1873398904523. The reversal of 1873398904440 is 444098933781.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

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, 2336679 + ... + 3034281.

It is an arithmetic number, because the mean of its divisors is an integer number (26369431200).

Almost surely, 2^{1873398904440} is an apocalyptic number.

1873398904440 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 1873398904440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3375287193600).

1873398904440 is an abundant number, since it is smaller than the sum of its proper divisors (4877175482760).

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

1873398904440 is a wasteful number, since it uses less digits than its factorization.

1873398904440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 697786 (or 697782 counting only the distinct ones).

The product of its (nonzero) digits is 20901888, while the sum is 60.

The spelling of 1873398904440 in words is "one trillion, eight hundred seventy-three billion, three hundred ninety-eight million, nine hundred four thousand, four hundred forty".