1894728924 has 36 divisors (see below), whose sum is σ = 5224859640. Its totient is φ = 574160160.

The previous prime is 1894728923. The next prime is 1894728947. The reversal of 1894728924 is 4298274981.

1894728924 is a `hidden beast` number, since 1 + 89 + 472 + 8 + 92 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1894728923) 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 11 ways as a sum of consecutive naturals, for example, 2391939 + ... + 2392730.

It is an arithmetic number, because the mean of its divisors is an integer number (145134990).

Almost surely, 2^1894728924 is an apocalyptic number.

It is an amenable number.

1894728924 is an abundant number, since it is smaller than the sum of its proper divisors (3330130716).

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

1894728924 is a wasteful number, since it uses less digits than its factorization.

1894728924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4784690 (or 4784685 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 54.

The square root of 1894728924 is about 43528.4840535482. The cubic root of 1894728924 is about 1237.4159080905.

The spelling of 1894728924 in words is "one billion, eight hundred ninety-four million, seven hundred twenty-eight thousand, nine hundred twenty-four".