763830981 has 12 divisors (see below), whose sum is σ = 1126786752. Its totient is φ = 498385896.

The previous prime is 763830967. The next prime is 763831007. The reversal of 763830981 is 189038367.

It is a happy number.

763830981 is a `hidden beast` number, since 7 + 638 + 3 + 0 + 9 + 8 + 1 = 666.

It is not a de Polignac number, because 763830981 - 2⁷ = 763830853 is a prime.

It is a super-2 number, since 2×763830981² = 1166875535070844722, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (763830911) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 902451 + ... + 903296.

It is an arithmetic number, because the mean of its divisors is an integer number (93898896).

Almost surely, 2^763830981 is an apocalyptic number.

It is an amenable number.

763830981 is a deficient number, since it is larger than the sum of its proper divisors (362955771).

763830981 is a wasteful number, since it uses less digits than its factorization.

763830981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1805800 (or 1805797 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 763830981 is about 27637.4923066475. The cubic root of 763830981 is about 914.1113256531. Note that the first 3 decimals are identical.

It can be divided in two parts, 763 and 830981, that added together give a square (831744 = 912²).

The spelling of 763830981 in words is "seven hundred sixty-three million, eight hundred thirty thousand, nine hundred eighty-one".