1988000453 has 2 divisors, whose sum is σ = 1988000454. Its totient is φ = 1988000452.

The previous prime is 1988000447. The next prime is 1988000461. The reversal of 1988000453 is 3540008891.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1967188609 + 20811844 = 44353^2 + 4562^2 .

It is a cyclic number.

It is not a de Polignac number, because 1988000453 - 2⁸ = 1988000197 is a prime.

It is a super-2 number, since 2×1988000453² = 7904291602256410418, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1988002453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 994000226 + 994000227.

It is an arithmetic number, because the mean of its divisors is an integer number (994000227).

Almost surely, 2^1988000453 is an apocalyptic number.

It is an amenable number.

1988000453 is a deficient number, since it is larger than the sum of its proper divisors (1).

1988000453 is an equidigital number, since it uses as much as digits as its factorization.

1988000453 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34560, while the sum is 38.

The square root of 1988000453 is about 44586.9986991724. The cubic root of 1988000453 is about 1257.3962467509.

The spelling of 1988000453 in words is "one billion, nine hundred eighty-eight million, four hundred fifty-three", and thus it is an aban number.