1485788861 has 2 divisors, whose sum is σ = 1485788862. Its totient is φ = 1485788860.

The previous prime is 1485788833. The next prime is 1485788879. The reversal of 1485788861 is 1688875841.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 932080900 + 553707961 = 30530^2 + 23531^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1485788861 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1485788797 and 1485788806.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1485788461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 742894430 + 742894431.

It is an arithmetic number, because the mean of its divisors is an integer number (742894431).

Almost surely, 2^1485788861 is an apocalyptic number.

It is an amenable number.

1485788861 is a deficient number, since it is larger than the sum of its proper divisors (1).

1485788861 is an equidigital number, since it uses as much as digits as its factorization.

1485788861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3440640, while the sum is 56.

The square root of 1485788861 is about 38545.9318346307. The cubic root of 1485788861 is about 1141.0877227280.

The spelling of 1485788861 in words is "one billion, four hundred eighty-five million, seven hundred eighty-eight thousand, eight hundred sixty-one".