3904218761 has 2 divisors, whose sum is σ = 3904218762. Its totient is φ = 3904218760.

The previous prime is 3904218751. The next prime is 3904218763. The reversal of 3904218761 is 1678124093.

3904218761 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2690393161 + 1213825600 = 51869^2 + 34840^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3904218761 is a prime.

Together with 3904218763, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (3904218763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1952109380 + 1952109381.

It is an arithmetic number, because the mean of its divisors is an integer number (1952109381).

Almost surely, 2^3904218761 is an apocalyptic number.

It is an amenable number.

3904218761 is a deficient number, since it is larger than the sum of its proper divisors (1).

3904218761 is an equidigital number, since it uses as much as digits as its factorization.

3904218761 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 3904218761 is about 62483.7479749735. The cubic root of 3904218761 is about 1574.6282836226.

The spelling of 3904218761 in words is "three billion, nine hundred four million, two hundred eighteen thousand, seven hundred sixty-one".