786930442281 has 81 divisors (see below), whose sum is σ = 1221227762391. Its totient is φ = 488226499488.

The previous prime is 786930442273. The next prime is 786930442307. The reversal of 786930442281 is 182244039687.

The square root of 786930442281 is 887091.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 771033267225 + 15897175056 = 878085^2 + 126084^2 .

It is not a de Polignac number, because 786930442281 - 2³ = 786930442273 is a prime.

It is a super-2 number, since 2×786930442281² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (786930442201) 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 80 ways as a sum of consecutive naturals, for example, 3994570675 + ... + 3994570871.

Almost surely, 2^786930442281 is an apocalyptic number.

786930442281 is the 887091-st square number.

786930442281 is the 443546-th centered octagonal number.

It is an amenable number.

786930442281 is a deficient number, since it is larger than the sum of its proper divisors (434297320110).

786930442281 is an equidigital number, since it uses as much as digits as its factorization.

786930442281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 596 (or 298 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 54.

The spelling of 786930442281 in words is "seven hundred eighty-six billion, nine hundred thirty million, four hundred forty-two thousand, two hundred eighty-one".