1994897360 has 20 divisors (see below), whose sum is σ = 4638136548. Its totient is φ = 797958912.

The previous prime is 1994897347. The next prime is 1994897413. The reversal of 1994897360 is 637984991.

It can be written as a sum of positive squares in 2 ways, for example, as 933180304 + 1061717056 = 30548^2 + 32584^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 1994897296 and 1994897305.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12468029 + ... + 12468188.

Almost surely, 2^1994897360 is an apocalyptic number.

1994897360 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1994897360 is an abundant number, since it is smaller than the sum of its proper divisors (2643239188).

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

1994897360 is a wasteful number, since it uses less digits than its factorization.

1994897360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24936230 (or 24936224 counting only the distinct ones).

The product of its (nonzero) digits is 2939328, while the sum is 56.

The square root of 1994897360 is about 44664.2738662569. The cubic root of 1994897360 is about 1258.8486501078.

The spelling of 1994897360 in words is "one billion, nine hundred ninety-four million, eight hundred ninety-seven thousand, three hundred sixty".