1981983003 has 32 divisors (see below), whose sum is σ = 3548170752. Its totient is φ = 950400000.

The previous prime is 1981982999. The next prime is 1981983007. The reversal of 1981983003 is 3003891891.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1981982999) and next prime (1981983007).

It is not a de Polignac number, because 1981983003 - 2² = 1981982999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1981983007) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 326998 + ... + 333003.

It is an arithmetic number, because the mean of its divisors is an integer number (110880336).

Almost surely, 2^1981983003 is an apocalyptic number.

1981983003 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1981983003 is a deficient number, since it is larger than the sum of its proper divisors (1566187749).

1981983003 is a wasteful number, since it uses less digits than its factorization.

1981983003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 660035.

The product of its (nonzero) digits is 46656, while the sum is 42.

The square root of 1981983003 is about 44519.4676854969. The cubic root of 1981983003 is about 1256.1262996835.

The spelling of 1981983003 in words is "one billion, nine hundred eighty-one million, nine hundred eighty-three thousand, three".