1485781049 has 4 divisors (see below), whose sum is σ = 1485886836. Its totient is φ = 1485675264.

The previous prime is 1485781009. The next prime is 1485781067. The reversal of 1485781049 is 9401875841.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 1070925625 + 414855424 = 32725^2 + 20368^2 .

It is a cyclic number.

It is not a de Polignac number, because 1485781049 - 2²⁸ = 1217345593 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1485780994 and 1485781012.

It is not an unprimeable number, because it can be changed into a prime (1485781009) 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, 27884 + ... + 61229.

It is an arithmetic number, because the mean of its divisors is an integer number (371471709).

Almost surely, 2^1485781049 is an apocalyptic number.

It is an amenable number.

1485781049 is a deficient number, since it is larger than the sum of its proper divisors (105787).

1485781049 is an equidigital number, since it uses as much as digits as its factorization.

1485781049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105786.

The product of its (nonzero) digits is 322560, while the sum is 47.

The square root of 1485781049 is about 38545.8305008467. The cubic root of 1485781049 is about 1141.0857228492.

The spelling of 1485781049 in words is "one billion, four hundred eighty-five million, seven hundred eighty-one thousand, forty-nine".