1988000461 has 2 divisors, whose sum is σ = 1988000462. Its totient is φ = 1988000460.

The previous prime is 1988000453. The next prime is 1988000537. The reversal of 1988000461 is 1640008891.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1731392100 + 256608361 = 41610^2 + 16019^2 .

It is a cyclic number.

It is not a de Polignac number, because 1988000461 - 2³ = 1988000453 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1988000461.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1988003461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 994000230 + 994000231.

It is an arithmetic number, because the mean of its divisors is an integer number (994000231).

Almost surely, 2^1988000461 is an apocalyptic number.

It is an amenable number.

1988000461 is a deficient number, since it is larger than the sum of its proper divisors (1).

1988000461 is an equidigital number, since it uses as much as digits as its factorization.

1988000461 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 37.

The square root of 1988000461 is about 44586.9987888846. The cubic root of 1988000461 is about 1257.3962484375.

The spelling of 1988000461 in words is "one billion, nine hundred eighty-eight million, four hundred sixty-one", and thus it is an aban number.