1994343120 has 600 divisors, whose sum is σ = 8805427488. Its totient is φ = 413683200.

The previous prime is 1994343107. The next prime is 1994343121. The reversal of 1994343120 is 213434991.

1994343120 is a `hidden beast` number, since 199 + 4 + 343 + 120 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1994343121) by changing a digit.

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 119 ways as a sum of consecutive naturals, for example, 3492435 + ... + 3493005.

Almost surely, 2^1994343120 is an apocalyptic number.

1994343120 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 1994343120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4402713744).

1994343120 is an abundant number, since it is smaller than the sum of its proper divisors (6811084368).

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

1994343120 is a wasteful number, since it uses less digits than its factorization.

1994343120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 621 (or 599 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 1994343120 is about 44658.0689237679. The cubic root of 1994343120 is about 1258.7320578269.

The spelling of 1994343120 in words is "one billion, nine hundred ninety-four million, three hundred forty-three thousand, one hundred twenty".