1988713073 has 2 divisors, whose sum is σ = 1988713074. Its totient is φ = 1988713072.

The previous prime is 1988713061. The next prime is 1988713121. The reversal of 1988713073 is 3703178891.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1966745104 + 21967969 = 44348^2 + 4687^2 .

It is an emirp because it is prime and its reverse (3703178891) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1988713073 is a prime.

It is a super-2 number, since 2×1988713073² = 7909959373442206658, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1988713003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 994356536 + 994356537.

It is an arithmetic number, because the mean of its divisors is an integer number (994356537).

Almost surely, 2^1988713073 is an apocalyptic number.

It is an amenable number.

1988713073 is a deficient number, since it is larger than the sum of its proper divisors (1).

1988713073 is an equidigital number, since it uses as much as digits as its factorization.

1988713073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 254016, while the sum is 47.

The square root of 1988713073 is about 44594.9893261564. The cubic root of 1988713073 is about 1257.5464711749.

The spelling of 1988713073 in words is "one billion, nine hundred eighty-eight million, seven hundred thirteen thousand, seventy-three".