1994115072 has 96 divisors (see below), whose sum is σ = 5335424640. Its totient is φ = 662323200.

The previous prime is 1994115061. The next prime is 1994115119. The reversal of 1994115072 is 2705114991.

It is a tau number, because it is divible by the number of its divisors (96).

It is a self number, because there is not a number n which added to its sum of digits gives 1994115072.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2844322 + ... + 2845022.

It is an arithmetic number, because the mean of its divisors is an integer number (55577340).

Almost surely, 2^1994115072 is an apocalyptic number.

1994115072 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 1994115072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2667712320).

1994115072 is an abundant number, since it is smaller than the sum of its proper divisors (3341309568).

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

1994115072 is an equidigital number, since it uses as much as digits as its factorization.

1994115072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1189 (or 1169 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 39.

The square root of 1994115072 is about 44655.5155831841. The cubic root of 1994115072 is about 1258.6840784083.

The spelling of 1994115072 in words is "one billion, nine hundred ninety-four million, one hundred fifteen thousand, seventy-two".