1284752163 has 4 divisors (see below), whose sum is σ = 1713002888. Its totient is φ = 856501440.

The previous prime is 1284752137. The next prime is 1284752167. The reversal of 1284752163 is 3612574821.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1284752163 - 2²⁰ = 1283703587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1284752167) 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, 214125358 + ... + 214125363.

It is an arithmetic number, because the mean of its divisors is an integer number (428250722).

Almost surely, 2^1284752163 is an apocalyptic number.

1284752163 is a deficient number, since it is larger than the sum of its proper divisors (428250725).

1284752163 is an equidigital number, since it uses as much as digits as its factorization.

1284752163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428250724.

The product of its digits is 80640, while the sum is 39.

The square root of 1284752163 is about 35843.4396089438. The cubic root of 1284752163 is about 1087.1090700035.

The spelling of 1284752163 in words is "one billion, two hundred eighty-four million, seven hundred fifty-two thousand, one hundred sixty-three".