3863721157 has 2 divisors, whose sum is σ = 3863721158. Its totient is φ = 3863721156.

The previous prime is 3863721149. The next prime is 3863721167. The reversal of 3863721157 is 7511273683.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3390267076 + 473454081 = 58226^2 + 21759^2 .

It is a cyclic number.

It is not a de Polignac number, because 3863721157 - 2³ = 3863721149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3863721167) 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 as a sum of consecutive naturals, namely, 1931860578 + 1931860579.

It is an arithmetic number, because the mean of its divisors is an integer number (1931860579).

Almost surely, 2^3863721157 is an apocalyptic number.

It is an amenable number.

3863721157 is a deficient number, since it is larger than the sum of its proper divisors (1).

3863721157 is an equidigital number, since it uses as much as digits as its factorization.

3863721157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 211680, while the sum is 43.

The square root of 3863721157 is about 62158.8381245982. The cubic root of 3863721157 is about 1569.1649252931.

The spelling of 3863721157 in words is "three billion, eight hundred sixty-three million, seven hundred twenty-one thousand, one hundred fifty-seven".