1485887021 has 2 divisors, whose sum is σ = 1485887022. Its totient is φ = 1485887020.

The previous prime is 1485886993. The next prime is 1485887069. The reversal of 1485887021 is 1207885841.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1399582921 + 86304100 = 37411^2 + 9290^2 .

It is a cyclic number.

It is not a de Polignac number, because 1485887021 - 2⁶ = 1485886957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1485887521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 742943510 + 742943511.

It is an arithmetic number, because the mean of its divisors is an integer number (742943511).

Almost surely, 2^1485887021 is an apocalyptic number.

It is an amenable number.

1485887021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1485887021 is an equidigital number, since it uses as much as digits as its factorization.

1485887021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 143360, while the sum is 44.

The square root of 1485887021 is about 38547.2050997216. The cubic root of 1485887021 is about 1141.1128511759.

The spelling of 1485887021 in words is "one billion, four hundred eighty-five million, eight hundred eighty-seven thousand, twenty-one".