781130963 has 4 divisors (see below), whose sum is σ = 806328768. Its totient is φ = 755933160.

The previous prime is 781130953. The next prime is 781130969. The reversal of 781130963 is 369031187.

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

It is a cyclic number.

It is not a de Polignac number, because 781130963 - 2¹⁶ = 781065427 is a prime.

It is a super-2 number, since 2×781130963² = 1220331162714614738, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (781130969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12598856 + ... + 12598917.

It is an arithmetic number, because the mean of its divisors is an integer number (201582192).

Almost surely, 2^781130963 is an apocalyptic number.

781130963 is a deficient number, since it is larger than the sum of its proper divisors (25197805).

781130963 is a wasteful number, since it uses less digits than its factorization.

781130963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25197804.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 781130963 is about 27948.7202390378. The cubic root of 781130963 is about 920.9610951047.

The spelling of 781130963 in words is "seven hundred eighty-one million, one hundred thirty thousand, nine hundred sixty-three".