1894728930 has 64 divisors (see below), whose sum is σ = 4746981888. Its totient is φ = 483528960.

The previous prime is 1894728923. The next prime is 1894728947. The reversal of 1894728930 is 398274981.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 53719 + ... + 81701.

It is an arithmetic number, because the mean of its divisors is an integer number (74171592).

Almost surely, 2^1894728930 is an apocalyptic number.

1894728930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1894728930, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2373490944).

1894728930 is an abundant number, since it is smaller than the sum of its proper divisors (2852252958).

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

1894728930 is a wasteful number, since it uses less digits than its factorization.

1894728930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28091.

The product of its (nonzero) digits is 870912, while the sum is 51.

The square root of 1894728930 is about 43528.4841224686. The cubic root of 1894728930 is about 1237.4159093967.

The spelling of 1894728930 in words is "one billion, eight hundred ninety-four million, seven hundred twenty-eight thousand, nine hundred thirty".