1994956008540 has 576 divisors, whose sum is σ = 6640415147520. Its totient is φ = 445684377600.

The previous prime is 1994956008523. The next prime is 1994956008637. The reversal of 1994956008540 is 458006594991.

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 191 ways as a sum of consecutive naturals, for example, 1880259610 + ... + 1880260670.

It is an arithmetic number, because the mean of its divisors is an integer number (11528498520).

Almost surely, 2^{1994956008540} is an apocalyptic number.

1994956008540 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 1994956008540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3320207573760).

1994956008540 is an abundant number, since it is smaller than the sum of its proper divisors (4645459138980).

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

1994956008540 is a wasteful number, since it uses less digits than its factorization.

1994956008540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1474 (or 1461 counting only the distinct ones).

The product of its (nonzero) digits is 13996800, while the sum is 60.

The spelling of 1994956008540 in words is "one trillion, nine hundred ninety-four billion, nine hundred fifty-six million, eight thousand, five hundred forty".