1983868401 has 4 divisors (see below), whose sum is σ = 2645157872. Its totient is φ = 1322578932.

The previous prime is 1983868399. The next prime is 1983868421. The reversal of 1983868401 is 1048683891.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1983868401 - 2¹ = 1983868399 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1983868421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 330644731 + ... + 330644736.

It is an arithmetic number, because the mean of its divisors is an integer number (661289468).

Almost surely, 2^1983868401 is an apocalyptic number.

It is an amenable number.

1983868401 is a deficient number, since it is larger than the sum of its proper divisors (661289471).

1983868401 is an equidigital number, since it uses as much as digits as its factorization.

1983868401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 661289470.

The product of its (nonzero) digits is 331776, while the sum is 48.

The square root of 1983868401 is about 44540.6376357591. The cubic root of 1983868401 is about 1256.5244779127.

The spelling of 1983868401 in words is "one billion, nine hundred eighty-three million, eight hundred sixty-eight thousand, four hundred one".