3919889200961 has 2 divisors, whose sum is σ = 3919889200962. Its totient is φ = 3919889200960.

The previous prime is 3919889200919. The next prime is 3919889200967. The reversal of 3919889200961 is 1690029889193.

3919889200961 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., 3877279984561 + 42609216400 = 1969081^2 + 206420^2 .

It is a cyclic number.

It is not a de Polignac number, because 3919889200961 - 2²² = 3919885006657 is a prime.

It is not a weakly prime, because it can be changed into another prime (3919889200967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1959944600480 + 1959944600481.

It is an arithmetic number, because the mean of its divisors is an integer number (1959944600481).

Almost surely, 2^{3919889200961} is an apocalyptic number.

It is an amenable number.

3919889200961 is a deficient number, since it is larger than the sum of its proper divisors (1).

3919889200961 is an equidigital number, since it uses as much as digits as its factorization.

3919889200961 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15116544, while the sum is 65.

The spelling of 3919889200961 in words is "three trillion, nine hundred nineteen billion, eight hundred eighty-nine million, two hundred thousand, nine hundred sixty-one".