1083203978 has 4 divisors (see below), whose sum is σ = 1624805970. Its totient is φ = 541601988.

The previous prime is 1083203923. The next prime is 1083203987. The reversal of 1083203978 is 8793023801.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8793023801 = 8951 ⋅982351.

It can be written as a sum of positive squares in only one way, i.e., 960814009 + 122389969 = 30997^2 + 11063^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 270800993 + ... + 270800996.

Almost surely, 2^1083203978 is an apocalyptic number.

1083203978 is a deficient number, since it is larger than the sum of its proper divisors (541601992).

1083203978 is an equidigital number, since it uses as much as digits as its factorization.

1083203978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 541601991.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 1083203978 is about 32912.0643229804. The cubic root of 1083203978 is about 1026.9991451193. Note that the first 3 decimals are identical.

The spelling of 1083203978 in words is "one billion, eighty-three million, two hundred three thousand, nine hundred seventy-eight".