1939800854412 has 144 divisors (see below), whose sum is σ = 5022563273728. Its totient is φ = 631079320320.

The previous prime is 1939800854393. The next prime is 1939800854437. The reversal of 1939800854412 is 2144580089391.

It is a happy number.

1939800854412 is a `hidden beast` number, since 1 + 9 + 3 + 9 + 80 + 0 + 8 + 544 + 12 = 666.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

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, 722995623 + ... + 722998305.

Almost surely, 2^{1939800854412} is an apocalyptic number.

1939800854412 is a gapful number since it is divisible by the number (12) 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 1939800854412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2511281636864).

1939800854412 is an abundant number, since it is smaller than the sum of its proper divisors (3082762419316).

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

1939800854412 is a wasteful number, since it uses less digits than its factorization.

1939800854412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5540 (or 5535 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 54.

The spelling of 1939800854412 in words is "one trillion, nine hundred thirty-nine billion, eight hundred million, eight hundred fifty-four thousand, four hundred twelve".