1481278563 has 8 divisors (see below), whose sum is σ = 2194486800. Its totient is φ = 987519024.

The previous prime is 1481278543. The next prime is 1481278573. The reversal of 1481278563 is 3658721841.

1481278563 is a `hidden beast` number, since 1 + 4 + 8 + 12 + 78 + 563 = 666.

It is not a de Polignac number, because 1481278563 - 2⁸ = 1481278307 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1481278543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27431058 + ... + 27431111.

It is an arithmetic number, because the mean of its divisors is an integer number (274310850).

Almost surely, 2^1481278563 is an apocalyptic number.

1481278563 is a deficient number, since it is larger than the sum of its proper divisors (713208237).

1481278563 is an equidigital number, since it uses as much as digits as its factorization.

1481278563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54862178 (or 54862172 counting only the distinct ones).

The product of its digits is 322560, while the sum is 45.

The square root of 1481278563 is about 38487.3818673081. The cubic root of 1481278563 is about 1139.9319142162.

It can be divided in two parts, 1481278 and 563, that added together give a palindrome (1481841).

The spelling of 1481278563 in words is "one billion, four hundred eighty-one million, two hundred seventy-eight thousand, five hundred sixty-three".