1488631621 has 2 divisors, whose sum is σ = 1488631622. Its totient is φ = 1488631620.

The previous prime is 1488631609. The next prime is 1488631633. The reversal of 1488631621 is 1261368841.

It is a balanced prime because it is at equal distance from previous prime (1488631609) and next prime (1488631633).

It can be written as a sum of positive squares in only one way, i.e., 1278062500 + 210569121 = 35750^2 + 14511^2 .

It is an emirp because it is prime and its reverse (1261368841) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1488631621 - 2⁷ = 1488631493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1488631601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 744315810 + 744315811.

It is an arithmetic number, because the mean of its divisors is an integer number (744315811).

Almost surely, 2^1488631621 is an apocalyptic number.

It is an amenable number.

1488631621 is a deficient number, since it is larger than the sum of its proper divisors (1).

1488631621 is an equidigital number, since it uses as much as digits as its factorization.

1488631621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 55296, while the sum is 40.

The square root of 1488631621 is about 38582.7891811880. The cubic root of 1488631621 is about 1141.8150068448.

The spelling of 1488631621 in words is "one billion, four hundred eighty-eight million, six hundred thirty-one thousand, six hundred twenty-one".