1063047891 has 12 divisors (see below), whose sum is σ = 1495924872. Its totient is φ = 671397984.

The previous prime is 1063047863. The next prime is 1063047907. The reversal of 1063047891 is 1987403601.

It is not a de Polignac number, because 1063047891 - 2¹⁷ = 1062916819 is a prime.

It is a super-2 number, since 2×1063047891² = 2260141637119095762, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1063047091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 489706 + ... + 491871.

It is an arithmetic number, because the mean of its divisors is an integer number (124660406).

Almost surely, 2^1063047891 is an apocalyptic number.

1063047891 is a deficient number, since it is larger than the sum of its proper divisors (432876981).

1063047891 is an equidigital number, since it uses as much as digits as its factorization.

1063047891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 981618 (or 981599 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 1063047891 is about 32604.4152071464. The cubic root of 1063047891 is about 1020.5891415824.

The spelling of 1063047891 in words is "one billion, sixty-three million, forty-seven thousand, eight hundred ninety-one".