1487211305 has 4 divisors (see below), whose sum is σ = 1784653572. Its totient is φ = 1189769040.

The previous prime is 1487211283. The next prime is 1487211311. The reversal of 1487211305 is 5031127841.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5031127841 = 21107 ⋅238363.

It can be written as a sum of positive squares in 2 ways, for example, as 629658649 + 857552656 = 25093^2 + 29284^2 .

It is not a de Polignac number, because 1487211305 - 2¹⁶ = 1487145769 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 148721126 + ... + 148721135.

It is an arithmetic number, because the mean of its divisors is an integer number (446163393).

Almost surely, 2^1487211305 is an apocalyptic number.

It is an amenable number.

1487211305 is a deficient number, since it is larger than the sum of its proper divisors (297442267).

1487211305 is an equidigital number, since it uses as much as digits as its factorization.

1487211305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297442266.

The product of its (nonzero) digits is 6720, while the sum is 32.

The square root of 1487211305 is about 38564.3787062621. The cubic root of 1487211305 is about 1141.4517528458.

The spelling of 1487211305 in words is "one billion, four hundred eighty-seven million, two hundred eleven thousand, three hundred five".