1984307730 has 16 divisors (see below), whose sum is σ = 4762338624. Its totient is φ = 529148720.

The previous prime is 1984307729. The next prime is 1984307747. The reversal of 1984307730 is 377034891.

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, 33071766 + ... + 33071825.

It is an arithmetic number, because the mean of its divisors is an integer number (297646164).

Almost surely, 2^1984307730 is an apocalyptic number.

1984307730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1984307730 is an abundant number, since it is smaller than the sum of its proper divisors (2778030894).

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

1984307730 is a wasteful number, since it uses less digits than its factorization.

1984307730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66143601.

The product of its (nonzero) digits is 127008, while the sum is 42.

The square root of 1984307730 is about 44545.5691399268. The cubic root of 1984307730 is about 1256.6172237988.

The spelling of 1984307730 in words is "one billion, nine hundred eighty-four million, three hundred seven thousand, seven hundred thirty".