3951895049 has 2 divisors, whose sum is σ = 3951895050. Its totient is φ = 3951895048.

The previous prime is 3951895043. The next prime is 3951895061. The reversal of 3951895049 is 9405981593.

It is a happy number.

3951895049 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2771285449 + 1180609600 = 52643^2 + 34360^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3951895049 is a prime.

It is not a weakly prime, because it can be changed into another prime (3951895043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1975947524 + 1975947525.

It is an arithmetic number, because the mean of its divisors is an integer number (1975947525).

Almost surely, 2^3951895049 is an apocalyptic number.

It is an amenable number.

3951895049 is a deficient number, since it is larger than the sum of its proper divisors (1).

3951895049 is an equidigital number, since it uses as much as digits as its factorization.

3951895049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1749600, while the sum is 53.

The square root of 3951895049 is about 62864.0998424379. The cubic root of 3951895049 is about 1581.0118830640.

The spelling of 3951895049 in words is "three billion, nine hundred fifty-one million, eight hundred ninety-five thousand, forty-nine".