1146278563 has 8 divisors (see below), whose sum is σ = 1213383600. Its totient is φ = 1081012128.

The previous prime is 1146278557. The next prime is 1146278587. The reversal of 1146278563 is 3658726411.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1146278563 - 2²⁵ = 1112724131 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1146278543) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 458368 + ... + 460861.

It is an arithmetic number, because the mean of its divisors is an integer number (151672950).

Almost surely, 2^1146278563 is an apocalyptic number.

1146278563 is a deficient number, since it is larger than the sum of its proper divisors (67105037).

1146278563 is an equidigital number, since it uses as much as digits as its factorization.

1146278563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 919301.

The product of its digits is 241920, while the sum is 43.

The square root of 1146278563 is about 33856.7358586146. The cubic root of 1146278563 is about 1046.5582129074.

The spelling of 1146278563 in words is "one billion, one hundred forty-six million, two hundred seventy-eight thousand, five hundred sixty-three".