1984428694 has 8 divisors (see below), whose sum is σ = 3005542800. Its totient is φ = 982581096.

The previous prime is 1984428679. The next prime is 1984428701. The reversal of 1984428694 is 4968244891.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4816369 + ... + 4816780.

It is an arithmetic number, because the mean of its divisors is an integer number (375692850).

Almost surely, 2^1984428694 is an apocalyptic number.

1984428694 is a deficient number, since it is larger than the sum of its proper divisors (1021114106).

1984428694 is a wasteful number, since it uses less digits than its factorization.

1984428694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9633254.

The product of its digits is 3981312, while the sum is 55.

The square root of 1984428694 is about 44546.9268749260. The cubic root of 1984428694 is about 1256.6427578687.

The spelling of 1984428694 in words is "one billion, nine hundred eighty-four million, four hundred twenty-eight thousand, six hundred ninety-four".