1994925179520 has 1792 divisors, whose sum is σ = 9267429830400. Its totient is φ = 398593032192.

The previous prime is 1994925179497. The next prime is 1994925179537. The reversal of 1994925179520 is 259715294991.

1994925179520 is a `hidden beast` number, since 1 + 9 + 9 + 4 + 9 + 2 + 517 + 95 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 223 ways as a sum of consecutive naturals, for example, 806681004 + ... + 806683476.

It is an arithmetic number, because the mean of its divisors is an integer number (5171556825).

Almost surely, 2^{1994925179520} is an apocalyptic number.

1994925179520 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 1994925179520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4633714915200).

1994925179520 is an abundant number, since it is smaller than the sum of its proper divisors (7272504650880).

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

1994925179520 is a wasteful number, since it uses less digits than its factorization.

1994925179520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2549 (or 2522 counting only the distinct ones).

The product of its (nonzero) digits is 18370800, while the sum is 63.

The spelling of 1994925179520 in words is "one trillion, nine hundred ninety-four billion, nine hundred twenty-five million, one hundred seventy-nine thousand, five hundred twenty".