3863640761 has 2 divisors, whose sum is σ = 3863640762. Its totient is φ = 3863640760.

The previous prime is 3863640757. The next prime is 3863640791. The reversal of 3863640761 is 1670463683.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2580640000 + 1283000761 = 50800^2 + 35819^2 .

It is a cyclic number.

It is not a de Polignac number, because 3863640761 - 2² = 3863640757 is a prime.

It is not a weakly prime, because it can be changed into another prime (3863640791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1931820380 + 1931820381.

It is an arithmetic number, because the mean of its divisors is an integer number (1931820381).

Almost surely, 2^3863640761 is an apocalyptic number.

It is an amenable number.

3863640761 is a deficient number, since it is larger than the sum of its proper divisors (1).

3863640761 is an equidigital number, since it uses as much as digits as its factorization.

3863640761 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 435456, while the sum is 44.

The square root of 3863640761 is about 62158.1914231745. The cubic root of 3863640761 is about 1569.1540415316.

It can be divided in two parts, 38636 and 40761, that added together give a palindrome (79397).

The spelling of 3863640761 in words is "three billion, eight hundred sixty-three million, six hundred forty thousand, seven hundred sixty-one".