1582666849 has 4 divisors (see below), whose sum is σ = 1592144064. Its totient is φ = 1573189636.

The previous prime is 1582666847. The next prime is 1582666859. The reversal of 1582666849 is 9486662851.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1582666849 - 2¹ = 1582666847 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1582666849.

It is not an unprimeable number, because it can be changed into a prime (1582666847) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4738357 + ... + 4738690.

It is an arithmetic number, because the mean of its divisors is an integer number (398036016).

Almost surely, 2^1582666849 is an apocalyptic number.

It is an amenable number.

1582666849 is a deficient number, since it is larger than the sum of its proper divisors (9477215).

1582666849 is an equidigital number, since it uses as much as digits as its factorization.

1582666849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9477214.

The product of its digits is 4976640, while the sum is 55.

The square root of 1582666849 is about 39782.7456191752. The cubic root of 1582666849 is about 1165.3682145778.

The spelling of 1582666849 in words is "one billion, five hundred eighty-two million, six hundred sixty-six thousand, eight hundred forty-nine".