19902983 has 2 divisors, whose sum is σ = 19902984. Its totient is φ = 19902982.

The previous prime is 19902977. The next prime is 19902989. The reversal of 19902983 is 38920991.

It is a balanced prime because it is at equal distance from previous prime (19902977) and next prime (19902989).

It is a cyclic number.

It is not a de Polignac number, because 19902983 - 2²⁴ = 3125767 is a prime.

It is a super-2 number, since 2×19902983² = 792257464596578, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 19902983.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19902989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9951491 + 9951492.

It is an arithmetic number, because the mean of its divisors is an integer number (9951492).

Almost surely, 2^19902983 is an apocalyptic number.

19902983 is a deficient number, since it is larger than the sum of its proper divisors (1).

19902983 is an equidigital number, since it uses as much as digits as its factorization.

19902983 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34992, while the sum is 41.

The square root of 19902983 is about 4461.2759385629. The cubic root of 19902983 is about 271.0021422923.

The spelling of 19902983 in words is "nineteen million, nine hundred two thousand, nine hundred eighty-three".