1263728485 has 16 divisors (see below), whose sum is σ = 1572272640. Its totient is φ = 974070720.

The previous prime is 1263728483. The next prime is 1263728489. The reversal of 1263728485 is 5848273621.

It is not a de Polignac number, because 1263728485 - 2¹ = 1263728483 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1263728483) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17694 + ... + 53296.

It is an arithmetic number, because the mean of its divisors is an integer number (98267040).

Almost surely, 2^1263728485 is an apocalyptic number.

It is an amenable number.

1263728485 is a deficient number, since it is larger than the sum of its proper divisors (308544155).

1263728485 is a wasteful number, since it uses less digits than its factorization.

1263728485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35868.

The product of its digits is 645120, while the sum is 46.

The square root of 1263728485 is about 35548.9589861644. The cubic root of 1263728485 is about 1081.1466117412.

The spelling of 1263728485 in words is "one billion, two hundred sixty-three million, seven hundred twenty-eight thousand, four hundred eighty-five".