1994064432 has 80 divisors (see below), whose sum is σ = 5202405120. Its totient is φ = 658135296.

The previous prime is 1994064409. The next prime is 1994064437. The reversal of 1994064432 is 2344604991.

It is not an unprimeable number, because it can be changed into a prime (1994064437) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3645183 + ... + 3645729.

It is an arithmetic number, because the mean of its divisors is an integer number (65030064).

Almost surely, 2^1994064432 is an apocalyptic number.

1994064432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1994064432 is an abundant number, since it is smaller than the sum of its proper divisors (3208340688).

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

1994064432 is a wasteful number, since it uses less digits than its factorization.

1994064432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1170 (or 1164 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 42.

The square root of 1994064432 is about 44654.9485723587. The cubic root of 1994064432 is about 1258.6734236736.

The spelling of 1994064432 in words is "one billion, nine hundred ninety-four million, sixty-four thousand, four hundred thirty-two".