1859420914988 has 144 divisors (see below), whose sum is σ = 4212315815904. Its totient is φ = 711317376000.

The previous prime is 1859420914979. The next prime is 1859420915017. The reversal of 1859420914988 is 8894190249581.

It is a super-2 number, since 2×1859420914988² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 15306488 + ... + 15427488.

It is an arithmetic number, because the mean of its divisors is an integer number (29252193166).

Almost surely, 2^{1859420914988} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1859420914988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2106157907952).

1859420914988 is an abundant number, since it is smaller than the sum of its proper divisors (2352894900916).

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

1859420914988 is a wasteful number, since it uses less digits than its factorization.

1859420914988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121232 (or 121223 counting only the distinct ones).

The product of its (nonzero) digits is 59719680, while the sum is 68.

The spelling of 1859420914988 in words is "one trillion, eight hundred fifty-nine billion, four hundred twenty million, nine hundred fourteen thousand, nine hundred eighty-eight".