1994365152 has 288 divisors, whose sum is σ = 6427380960. Its totient is φ = 604661760.

The previous prime is 1994365127. The next prime is 1994365159. The reversal of 1994365152 is 2515634991.

1994365152 is a `hidden beast` number, since 1 + 99 + 43 + 6 + 515 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (288).

It is a junction number, because it is equal to n+sod(n) for n = 1994365098 and 1994365107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1994365159) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11018502 + ... + 11018682.

It is an arithmetic number, because the mean of its divisors is an integer number (22317295).

Almost surely, 2^1994365152 is an apocalyptic number.

1994365152 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 1994365152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3213690480).

1994365152 is an abundant number, since it is smaller than the sum of its proper divisors (4433015808).

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

1994365152 is a wasteful number, since it uses less digits than its factorization.

1994365152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328 (or 308 counting only the distinct ones).

The product of its digits is 291600, while the sum is 45.

The square root of 1994365152 is about 44658.3155974338. The cubic root of 1994365152 is about 1258.7366929843.

The spelling of 1994365152 in words is "one billion, nine hundred ninety-four million, three hundred sixty-five thousand, one hundred fifty-two".