1984683901 has 2 divisors, whose sum is σ = 1984683902. Its totient is φ = 1984683900.

The previous prime is 1984683889. The next prime is 1984683937. The reversal of 1984683901 is 1093864891.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1889640900 + 95043001 = 43470^2 + 9749^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1984683901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1984683941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 992341950 + 992341951.

It is an arithmetic number, because the mean of its divisors is an integer number (992341951).

Almost surely, 2^1984683901 is an apocalyptic number.

It is an amenable number.

1984683901 is a deficient number, since it is larger than the sum of its proper divisors (1).

1984683901 is an equidigital number, since it uses as much as digits as its factorization.

1984683901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 373248, while the sum is 49.

The square root of 1984683901 is about 44549.7912565255. The cubic root of 1984683901 is about 1256.6966256448.

The spelling of 1984683901 in words is "one billion, nine hundred eighty-four million, six hundred eighty-three thousand, nine hundred one".